Sure thing! We've got 664 and we're gonna multiply it by 48. That's the same as adding 664 to itself 48 times.
Step 1: 0 + 664 = 664
Step 2: 664 + 664 = 1328
Step 3: 1328 + 664 = 1992
Step 4: 1992 + 664 = 2656
Step 5: 2656 + 664 = 3320
Step 6: 3320 + 664 = 3984
Step 7: 3984 + 664 = 4648
Step 8: 4648 + 664 = 5312
Step 9: 5312 + 664 = 5976
Step 10: 5976 + 664 = 6640
Step 11: 6640 + 664 = 7304
Step 12: 7304 + 664 = 7968
Step 13: 7968 + 664 = 8632
Step 14: 8632 + 664 = 9296
Step 15: 9296 + 664 = 9960
Step 16: 9960 + 664 = 10624
Step 17: 10624 + 664 = 11288
Step 18: 11288 + 664 = 11952
Step 19: 11952 + 664 = 12616
Step 20: 12616 + 664 = 13280
Step 21: 13280 + 664 = 13944
Step 22: 13944 + 664 = 14608
Step 23: 14608 + 664 = 15272
Step 24: 15272 + 664 = 15936
Step 25: 15936 + 664 = 16600
Step 26: 16600 + 664 = 17264
Step 27: 17264 + 664 = 17928
Step 28: 17928 + 664 = 18592
Step 29: 18592 + 664 = 19256
Step 30: 19256 + 664 = 19920
Step 31: 19920 + 664 = 20584
Step 32: 20584 + 664 = 21248
Step 33: 21248 + 664 = 21912
Step 34: 21912 + 664 = 22576
Step 35: 22576 + 664 = 23240
Step 36: 23240 + 664 = 23904
Step 37: 23904 + 664 = 24568
Step 38: 24568 + 664 = 25232
Step 39: 25232 + 664 = 25896
Step 40: 25896 + 664 = 26560
Step 41: 26560 + 664 = 27224
Step 42: 27224 + 664 = 27888
Step 43: 27888 + 664 = 28552
Step 44: 28552 + 664 = 29216
Step 45: 29216 + 664 = 29880
Step 46: 29880 + 664 = 30544
Step 47: 30544 + 664 = 31208
Step 48: 31208 + 664 = 31872

So, 664*48 = 31872