Alright, let's solve this math problem step by step. First, we have the number 715. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 66. So, we're going to take the number 715 and add it to itself 66 times.
Step 1: 0 + 715 = 715
Step 2: 715 + 715 = 1430
Step 3: 1430 + 715 = 2145
Step 4: 2145 + 715 = 2860
Step 5: 2860 + 715 = 3575
Step 6: 3575 + 715 = 4290
Step 7: 4290 + 715 = 5005
Step 8: 5005 + 715 = 5720
Step 9: 5720 + 715 = 6435
Step 10: 6435 + 715 = 7150
Step 11: 7150 + 715 = 7865
Step 12: 7865 + 715 = 8580
Step 13: 8580 + 715 = 9295
Step 14: 9295 + 715 = 10010
Step 15: 10010 + 715 = 10725
Step 16: 10725 + 715 = 11440
Step 17: 11440 + 715 = 12155
Step 18: 12155 + 715 = 12870
Step 19: 12870 + 715 = 13585
Step 20: 13585 + 715 = 14300
Step 21: 14300 + 715 = 15015
Step 22: 15015 + 715 = 15730
Step 23: 15730 + 715 = 16445
Step 24: 16445 + 715 = 17160
Step 25: 17160 + 715 = 17875
Step 26: 17875 + 715 = 18590
Step 27: 18590 + 715 = 19305
Step 28: 19305 + 715 = 20020
Step 29: 20020 + 715 = 20735
Step 30: 20735 + 715 = 21450
Step 31: 21450 + 715 = 22165
Step 32: 22165 + 715 = 22880
Step 33: 22880 + 715 = 23595
Step 34: 23595 + 715 = 24310
Step 35: 24310 + 715 = 25025
Step 36: 25025 + 715 = 25740
Step 37: 25740 + 715 = 26455
Step 38: 26455 + 715 = 27170
Step 39: 27170 + 715 = 27885
Step 40: 27885 + 715 = 28600
Step 41: 28600 + 715 = 29315
Step 42: 29315 + 715 = 30030
Step 43: 30030 + 715 = 30745
Step 44: 30745 + 715 = 31460
Step 45: 31460 + 715 = 32175
Step 46: 32175 + 715 = 32890
Step 47: 32890 + 715 = 33605
Step 48: 33605 + 715 = 34320
Step 49: 34320 + 715 = 35035
Step 50: 35035 + 715 = 35750
Step 51: 35750 + 715 = 36465
Step 52: 36465 + 715 = 37180
Step 53: 37180 + 715 = 37895
Step 54: 37895 + 715 = 38610
Step 55: 38610 + 715 = 39325
Step 56: 39325 + 715 = 40040
Step 57: 40040 + 715 = 40755
Step 58: 40755 + 715 = 41470
Step 59: 41470 + 715 = 42185
Step 60: 42185 + 715 = 42900
Step 61: 42900 + 715 = 43615
Step 62: 43615 + 715 = 44330
Step 63: 44330 + 715 = 45045
Step 64: 45045 + 715 = 45760
Step 65: 45760 + 715 = 46475
Step 66: 46475 + 715 = 47190

So, 715*66 = 47190