OK, let's work through this together. We're starting with 440 and we're going to multiply it by 18, which means we add 440 to itself 18 times.
Step 1: 0 + 440 = 440
Step 2: 440 + 440 = 880
Step 3: 880 + 440 = 1320
Step 4: 1320 + 440 = 1760
Step 5: 1760 + 440 = 2200
Step 6: 2200 + 440 = 2640
Step 7: 2640 + 440 = 3080
Step 8: 3080 + 440 = 3520
Step 9: 3520 + 440 = 3960
Step 10: 3960 + 440 = 4400
Step 11: 4400 + 440 = 4840
Step 12: 4840 + 440 = 5280
Step 13: 5280 + 440 = 5720
Step 14: 5720 + 440 = 6160
Step 15: 6160 + 440 = 6600
Step 16: 6600 + 440 = 7040
Step 17: 7040 + 440 = 7480
Step 18: 7480 + 440 = 7920

So, 440*18 = 7920