Let's get this math done. We have 940 and we're going to multiply it by 400. This is the same as taking 940 and adding it to itself 400 times.
Step 1: 0 + 940 = 940
Step 2: 940 + 940 = 1880
Step 3: 1880 + 940 = 2820
Step 4: 2820 + 940 = 3760
Step 5: 3760 + 940 = 4700
Step 6: 4700 + 940 = 5640
Step 7: 5640 + 940 = 6580
Step 8: 6580 + 940 = 7520
Step 9: 7520 + 940 = 8460
Step 10: 8460 + 940 = 9400
Step 11: 9400 + 940 = 10340
Step 12: 10340 + 940 = 11280
Step 13: 11280 + 940 = 12220
Step 14: 12220 + 940 = 13160
Step 15: 13160 + 940 = 14100
Step 16: 14100 + 940 = 15040
Step 17: 15040 + 940 = 15980
Step 18: 15980 + 940 = 16920
Step 19: 16920 + 940 = 17860
Step 20: 17860 + 940 = 18800
Step 21: 18800 + 940 = 19740
Step 22: 19740 + 940 = 20680
Step 23: 20680 + 940 = 21620
Step 24: 21620 + 940 = 22560
Step 25: 22560 + 940 = 23500
Step 26: 23500 + 940 = 24440
Step 27: 24440 + 940 = 25380
Step 28: 25380 + 940 = 26320
Step 29: 26320 + 940 = 27260
Step 30: 27260 + 940 = 28200
Step 31: 28200 + 940 = 29140
Step 32: 29140 + 940 = 30080
Step 33: 30080 + 940 = 31020
Step 34: 31020 + 940 = 31960
Step 35: 31960 + 940 = 32900
Step 36: 32900 + 940 = 33840
Step 37: 33840 + 940 = 34780
Step 38: 34780 + 940 = 35720
Step 39: 35720 + 940 = 36660
Step 40: 36660 + 940 = 37600
Step 41: 37600 + 940 = 38540
Step 42: 38540 + 940 = 39480
Step 43: 39480 + 940 = 40420
Step 44: 40420 + 940 = 41360
Step 45: 41360 + 940 = 42300
Step 46: 42300 + 940 = 43240
Step 47: 43240 + 940 = 44180
Step 48: 44180 + 940 = 45120
Step 49: 45120 + 940 = 46060
Step 50: 46060 + 940 = 47000
Step 51: 47000 + 940 = 47940
Step 52: 47940 + 940 = 48880
Step 53: 48880 + 940 = 49820
Step 54: 49820 + 940 = 50760
Step 55: 50760 + 940 = 51700
Step 56: 51700 + 940 = 52640
Step 57: 52640 + 940 = 53580
Step 58: 53580 + 940 = 54520
Step 59: 54520 + 940 = 55460
Step 60: 55460 + 940 = 56400
Step 61: 56400 + 940 = 57340
Step 62: 57340 + 940 = 58280
Step 63: 58280 + 940 = 59220
Step 64: 59220 + 940 = 60160
Step 65: 60160 + 940 = 61100
Step 66: 61100 + 940 = 62040
Step 67: 62040 + 940 = 62980
Step 68: 62980 + 940 = 63920
Step 69: 63920 + 940 = 64860
Step 70: 64860 + 940 = 65800
Step 71: 65800 + 940 = 66740
Step 72: 66740 + 940 = 67680
Step 73: 67680 + 940 = 68620
Step 74: 68620 + 940 = 69560
Step 75: 69560 + 940 = 70500
Step 76: 70500 + 940 = 71440
Step 77: 71440 + 940 = 72380
Step 78: 72380 + 940 = 73320
Step 79: 73320 + 940 = 74260
Step 80: 74260 + 940 = 75200
Step 81: 75200 + 940 = 76140
Step 82: 76140 + 940 = 77080
Step 83: 77080 + 940 = 78020
Step 84: 78020 + 940 = 78960
Step 85: 78960 + 940 = 79900
Step 86: 79900 + 940 = 80840
Step 87: 80840 + 940 = 81780
Step 88: 81780 + 940 = 82720
Step 89: 82720 + 940 = 83660
Step 90: 83660 + 940 = 84600
Step 91: 84600 + 940 = 85540
Step 92: 85540 + 940 = 86480
Step 93: 86480 + 940 = 87420
Step 94: 87420 + 940 = 88360
Step 95: 88360 + 940 = 89300
Step 96: 89300 + 940 = 90240
Step 97: 90240 + 940 = 91180
Step 98: 91180 + 940 = 92120
Step 99: 92120 + 940 = 93060
Step 100: 93060 + 940 = 94000
Step 101: 94000 + 940 = 94940
Step 102: 94940 + 940 = 95880
Step 103: 95880 + 940 = 96820
Step 104: 96820 + 940 = 97760
Step 105: 97760 + 940 = 98700
Step 106: 98700 + 940 = 99640
Step 107: 99640 + 940 = 100580
Step 108: 100580 + 940 = 101520
Step 109: 101520 + 940 = 102460
Step 110: 102460 + 940 = 103400
Step 111: 103400 + 940 = 104340
Step 112: 104340 + 940 = 105280
Step 113: 105280 + 940 = 106220
Step 114: 106220 + 940 = 107160
Step 115: 107160 + 940 = 108100
Step 116: 108100 + 940 = 109040
Step 117: 109040 + 940 = 109980
Step 118: 109980 + 940 = 110920
Step 119: 110920 + 940 = 111860
Step 120: 111860 + 940 = 112800
Step 121: 112800 + 940 = 113740
Step 122: 113740 + 940 = 114680
Step 123: 114680 + 940 = 115620
Step 124: 115620 + 940 = 116560
Step 125: 116560 + 940 = 117500
Step 126: 117500 + 940 = 118440
Step 127: 118440 + 940 = 119380
Step 128: 119380 + 940 = 120320
Step 129: 120320 + 940 = 121260
Step 130: 121260 + 940 = 122200
Step 131: 122200 + 940 = 123140
Step 132: 123140 + 940 = 124080
Step 133: 124080 + 940 = 125020
Step 134: 125020 + 940 = 125960
Step 135: 125960 + 940 = 126900
Step 136: 126900 + 940 = 127840
Step 137: 127840 + 940 = 128780
Step 138: 128780 + 940 = 129720
Step 139: 129720 + 940 = 130660
Step 140: 130660 + 940 = 131600
Step 141: 131600 + 940 = 132540
Step 142: 132540 + 940 = 133480
Step 143: 133480 + 940 = 134420
Step 144: 134420 + 940 = 135360
Step 145: 135360 + 940 = 136300
Step 146: 136300 + 940 = 137240
Step 147: 137240 + 940 = 138180
Step 148: 138180 + 940 = 139120
Step 149: 139120 + 940 = 140060
Step 150: 140060 + 940 = 141000
Step 151: 141000 + 940 = 141940
Step 152: 141940 + 940 = 142880
Step 153: 142880 + 940 = 143820
Step 154: 143820 + 940 = 144760
Step 155: 144760 + 940 = 145700
Step 156: 145700 + 940 = 146640
Step 157: 146640 + 940 = 147580
Step 158: 147580 + 940 = 148520
Step 159: 148520 + 940 = 149460
Step 160: 149460 + 940 = 150400
Step 161: 150400 + 940 = 151340
Step 162: 151340 + 940 = 152280
Step 163: 152280 + 940 = 153220
Step 164: 153220 + 940 = 154160
Step 165: 154160 + 940 = 155100
Step 166: 155100 + 940 = 156040
Step 167: 156040 + 940 = 156980
Step 168: 156980 + 940 = 157920
Step 169: 157920 + 940 = 158860
Step 170: 158860 + 940 = 159800
Step 171: 159800 + 940 = 160740
Step 172: 160740 + 940 = 161680
Step 173: 161680 + 940 = 162620
Step 174: 162620 + 940 = 163560
Step 175: 163560 + 940 = 164500
Step 176: 164500 + 940 = 165440
Step 177: 165440 + 940 = 166380
Step 178: 166380 + 940 = 167320
Step 179: 167320 + 940 = 168260
Step 180: 168260 + 940 = 169200
Step 181: 169200 + 940 = 170140
Step 182: 170140 + 940 = 171080
Step 183: 171080 + 940 = 172020
Step 184: 172020 + 940 = 172960
Step 185: 172960 + 940 = 173900
Step 186: 173900 + 940 = 174840
Step 187: 174840 + 940 = 175780
Step 188: 175780 + 940 = 176720
Step 189: 176720 + 940 = 177660
Step 190: 177660 + 940 = 178600
Step 191: 178600 + 940 = 179540
Step 192: 179540 + 940 = 180480
Step 193: 180480 + 940 = 181420
Step 194: 181420 + 940 = 182360
Step 195: 182360 + 940 = 183300
Step 196: 183300 + 940 = 184240
Step 197: 184240 + 940 = 185180
Step 198: 185180 + 940 = 186120
Step 199: 186120 + 940 = 187060
Step 200: 187060 + 940 = 188000
Step 201: 188000 + 940 = 188940
Step 202: 188940 + 940 = 189880
Step 203: 189880 + 940 = 190820
Step 204: 190820 + 940 = 191760
Step 205: 191760 + 940 = 192700
Step 206: 192700 + 940 = 193640
Step 207: 193640 + 940 = 194580
Step 208: 194580 + 940 = 195520
Step 209: 195520 + 940 = 196460
Step 210: 196460 + 940 = 197400
Step 211: 197400 + 940 = 198340
Step 212: 198340 + 940 = 199280
Step 213: 199280 + 940 = 200220
Step 214: 200220 + 940 = 201160
Step 215: 201160 + 940 = 202100
Step 216: 202100 + 940 = 203040
Step 217: 203040 + 940 = 203980
Step 218: 203980 + 940 = 204920
Step 219: 204920 + 940 = 205860
Step 220: 205860 + 940 = 206800
Step 221: 206800 + 940 = 207740
Step 222: 207740 + 940 = 208680
Step 223: 208680 + 940 = 209620
Step 224: 209620 + 940 = 210560
Step 225: 210560 + 940 = 211500
Step 226: 211500 + 940 = 212440
Step 227: 212440 + 940 = 213380
Step 228: 213380 + 940 = 214320
Step 229: 214320 + 940 = 215260
Step 230: 215260 + 940 = 216200
Step 231: 216200 + 940 = 217140
Step 232: 217140 + 940 = 218080
Step 233: 218080 + 940 = 219020
Step 234: 219020 + 940 = 219960
Step 235: 219960 + 940 = 220900
Step 236: 220900 + 940 = 221840
Step 237: 221840 + 940 = 222780
Step 238: 222780 + 940 = 223720
Step 239: 223720 + 940 = 224660
Step 240: 224660 + 940 = 225600
Step 241: 225600 + 940 = 226540
Step 242: 226540 + 940 = 227480
Step 243: 227480 + 940 = 228420
Step 244: 228420 + 940 = 229360
Step 245: 229360 + 940 = 230300
Step 246: 230300 + 940 = 231240
Step 247: 231240 + 940 = 232180
Step 248: 232180 + 940 = 233120
Step 249: 233120 + 940 = 234060
Step 250: 234060 + 940 = 235000
Step 251: 235000 + 940 = 235940
Step 252: 235940 + 940 = 236880
Step 253: 236880 + 940 = 237820
Step 254: 237820 + 940 = 238760
Step 255: 238760 + 940 = 239700
Step 256: 239700 + 940 = 240640
Step 257: 240640 + 940 = 241580
Step 258: 241580 + 940 = 242520
Step 259: 242520 + 940 = 243460
Step 260: 243460 + 940 = 244400
Step 261: 244400 + 940 = 245340
Step 262: 245340 + 940 = 246280
Step 263: 246280 + 940 = 247220
Step 264: 247220 + 940 = 248160
Step 265: 248160 + 940 = 249100
Step 266: 249100 + 940 = 250040
Step 267: 250040 + 940 = 250980
Step 268: 250980 + 940 = 251920
Step 269: 251920 + 940 = 252860
Step 270: 252860 + 940 = 253800
Step 271: 253800 + 940 = 254740
Step 272: 254740 + 940 = 255680
Step 273: 255680 + 940 = 256620
Step 274: 256620 + 940 = 257560
Step 275: 257560 + 940 = 258500
Step 276: 258500 + 940 = 259440
Step 277: 259440 + 940 = 260380
Step 278: 260380 + 940 = 261320
Step 279: 261320 + 940 = 262260
Step 280: 262260 + 940 = 263200
Step 281: 263200 + 940 = 264140
Step 282: 264140 + 940 = 265080
Step 283: 265080 + 940 = 266020
Step 284: 266020 + 940 = 266960
Step 285: 266960 + 940 = 267900
Step 286: 267900 + 940 = 268840
Step 287: 268840 + 940 = 269780
Step 288: 269780 + 940 = 270720
Step 289: 270720 + 940 = 271660
Step 290: 271660 + 940 = 272600
Step 291: 272600 + 940 = 273540
Step 292: 273540 + 940 = 274480
Step 293: 274480 + 940 = 275420
Step 294: 275420 + 940 = 276360
Step 295: 276360 + 940 = 277300
Step 296: 277300 + 940 = 278240
Step 297: 278240 + 940 = 279180
Step 298: 279180 + 940 = 280120
Step 299: 280120 + 940 = 281060
Step 300: 281060 + 940 = 282000
Step 301: 282000 + 940 = 282940
Step 302: 282940 + 940 = 283880
Step 303: 283880 + 940 = 284820
Step 304: 284820 + 940 = 285760
Step 305: 285760 + 940 = 286700
Step 306: 286700 + 940 = 287640
Step 307: 287640 + 940 = 288580
Step 308: 288580 + 940 = 289520
Step 309: 289520 + 940 = 290460
Step 310: 290460 + 940 = 291400
Step 311: 291400 + 940 = 292340
Step 312: 292340 + 940 = 293280
Step 313: 293280 + 940 = 294220
Step 314: 294220 + 940 = 295160
Step 315: 295160 + 940 = 296100
Step 316: 296100 + 940 = 297040
Step 317: 297040 + 940 = 297980
Step 318: 297980 + 940 = 298920
Step 319: 298920 + 940 = 299860
Step 320: 299860 + 940 = 300800
Step 321: 300800 + 940 = 301740
Step 322: 301740 + 940 = 302680
Step 323: 302680 + 940 = 303620
Step 324: 303620 + 940 = 304560
Step 325: 304560 + 940 = 305500
Step 326: 305500 + 940 = 306440
Step 327: 306440 + 940 = 307380
Step 328: 307380 + 940 = 308320
Step 329: 308320 + 940 = 309260
Step 330: 309260 + 940 = 310200
Step 331: 310200 + 940 = 311140
Step 332: 311140 + 940 = 312080
Step 333: 312080 + 940 = 313020
Step 334: 313020 + 940 = 313960
Step 335: 313960 + 940 = 314900
Step 336: 314900 + 940 = 315840
Step 337: 315840 + 940 = 316780
Step 338: 316780 + 940 = 317720
Step 339: 317720 + 940 = 318660
Step 340: 318660 + 940 = 319600
Step 341: 319600 + 940 = 320540
Step 342: 320540 + 940 = 321480
Step 343: 321480 + 940 = 322420
Step 344: 322420 + 940 = 323360
Step 345: 323360 + 940 = 324300
Step 346: 324300 + 940 = 325240
Step 347: 325240 + 940 = 326180
Step 348: 326180 + 940 = 327120
Step 349: 327120 + 940 = 328060
Step 350: 328060 + 940 = 329000
Step 351: 329000 + 940 = 329940
Step 352: 329940 + 940 = 330880
Step 353: 330880 + 940 = 331820
Step 354: 331820 + 940 = 332760
Step 355: 332760 + 940 = 333700
Step 356: 333700 + 940 = 334640
Step 357: 334640 + 940 = 335580
Step 358: 335580 + 940 = 336520
Step 359: 336520 + 940 = 337460
Step 360: 337460 + 940 = 338400
Step 361: 338400 + 940 = 339340
Step 362: 339340 + 940 = 340280
Step 363: 340280 + 940 = 341220
Step 364: 341220 + 940 = 342160
Step 365: 342160 + 940 = 343100
Step 366: 343100 + 940 = 344040
Step 367: 344040 + 940 = 344980
Step 368: 344980 + 940 = 345920
Step 369: 345920 + 940 = 346860
Step 370: 346860 + 940 = 347800
Step 371: 347800 + 940 = 348740
Step 372: 348740 + 940 = 349680
Step 373: 349680 + 940 = 350620
Step 374: 350620 + 940 = 351560
Step 375: 351560 + 940 = 352500
Step 376: 352500 + 940 = 353440
Step 377: 353440 + 940 = 354380
Step 378: 354380 + 940 = 355320
Step 379: 355320 + 940 = 356260
Step 380: 356260 + 940 = 357200
Step 381: 357200 + 940 = 358140
Step 382: 358140 + 940 = 359080
Step 383: 359080 + 940 = 360020
Step 384: 360020 + 940 = 360960
Step 385: 360960 + 940 = 361900
Step 386: 361900 + 940 = 362840
Step 387: 362840 + 940 = 363780
Step 388: 363780 + 940 = 364720
Step 389: 364720 + 940 = 365660
Step 390: 365660 + 940 = 366600
Step 391: 366600 + 940 = 367540
Step 392: 367540 + 940 = 368480
Step 393: 368480 + 940 = 369420
Step 394: 369420 + 940 = 370360
Step 395: 370360 + 940 = 371300
Step 396: 371300 + 940 = 372240
Step 397: 372240 + 940 = 373180
Step 398: 373180 + 940 = 374120
Step 399: 374120 + 940 = 375060
Step 400: 375060 + 940 = 376000

So, 940*400 = 376000