Alright, let's solve this math problem step by step. First, we have the number 512. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 40. So, we're going to take the number 512 and add it to itself 40 times.
Step 1: 0 + 512 = 512
Step 2: 512 + 512 = 1024
Step 3: 1024 + 512 = 1536
Step 4: 1536 + 512 = 2048
Step 5: 2048 + 512 = 2560
Step 6: 2560 + 512 = 3072
Step 7: 3072 + 512 = 3584
Step 8: 3584 + 512 = 4096
Step 9: 4096 + 512 = 4608
Step 10: 4608 + 512 = 5120
Step 11: 5120 + 512 = 5632
Step 12: 5632 + 512 = 6144
Step 13: 6144 + 512 = 6656
Step 14: 6656 + 512 = 7168
Step 15: 7168 + 512 = 7680
Step 16: 7680 + 512 = 8192
Step 17: 8192 + 512 = 8704
Step 18: 8704 + 512 = 9216
Step 19: 9216 + 512 = 9728
Step 20: 9728 + 512 = 10240
Step 21: 10240 + 512 = 10752
Step 22: 10752 + 512 = 11264
Step 23: 11264 + 512 = 11776
Step 24: 11776 + 512 = 12288
Step 25: 12288 + 512 = 12800
Step 26: 12800 + 512 = 13312
Step 27: 13312 + 512 = 13824
Step 28: 13824 + 512 = 14336
Step 29: 14336 + 512 = 14848
Step 30: 14848 + 512 = 15360
Step 31: 15360 + 512 = 15872
Step 32: 15872 + 512 = 16384
Step 33: 16384 + 512 = 16896
Step 34: 16896 + 512 = 17408
Step 35: 17408 + 512 = 17920
Step 36: 17920 + 512 = 18432
Step 37: 18432 + 512 = 18944
Step 38: 18944 + 512 = 19456
Step 39: 19456 + 512 = 19968
Step 40: 19968 + 512 = 20480

So, 512*40 = 20480