Alright, let's solve this math problem step by step. First, we have the number 648. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 37. So, we're going to take the number 648 and add it to itself 37 times.
Step 1: 0 + 648 = 648
Step 2: 648 + 648 = 1296
Step 3: 1296 + 648 = 1944
Step 4: 1944 + 648 = 2592
Step 5: 2592 + 648 = 3240
Step 6: 3240 + 648 = 3888
Step 7: 3888 + 648 = 4536
Step 8: 4536 + 648 = 5184
Step 9: 5184 + 648 = 5832
Step 10: 5832 + 648 = 6480
Step 11: 6480 + 648 = 7128
Step 12: 7128 + 648 = 7776
Step 13: 7776 + 648 = 8424
Step 14: 8424 + 648 = 9072
Step 15: 9072 + 648 = 9720
Step 16: 9720 + 648 = 10368
Step 17: 10368 + 648 = 11016
Step 18: 11016 + 648 = 11664
Step 19: 11664 + 648 = 12312
Step 20: 12312 + 648 = 12960
Step 21: 12960 + 648 = 13608
Step 22: 13608 + 648 = 14256
Step 23: 14256 + 648 = 14904
Step 24: 14904 + 648 = 15552
Step 25: 15552 + 648 = 16200
Step 26: 16200 + 648 = 16848
Step 27: 16848 + 648 = 17496
Step 28: 17496 + 648 = 18144
Step 29: 18144 + 648 = 18792
Step 30: 18792 + 648 = 19440
Step 31: 19440 + 648 = 20088
Step 32: 20088 + 648 = 20736
Step 33: 20736 + 648 = 21384
Step 34: 21384 + 648 = 22032
Step 35: 22032 + 648 = 22680
Step 36: 22680 + 648 = 23328
Step 37: 23328 + 648 = 23976

So, 648*37 = 23976