OK, let's crack this. We're given 392 and our task is to multiply it by 23. Essentially, we'll be adding 392 to itself 23 times.
Step 1: 0 + 392 = 392
Step 2: 392 + 392 = 784
Step 3: 784 + 392 = 1176
Step 4: 1176 + 392 = 1568
Step 5: 1568 + 392 = 1960
Step 6: 1960 + 392 = 2352
Step 7: 2352 + 392 = 2744
Step 8: 2744 + 392 = 3136
Step 9: 3136 + 392 = 3528
Step 10: 3528 + 392 = 3920
Step 11: 3920 + 392 = 4312
Step 12: 4312 + 392 = 4704
Step 13: 4704 + 392 = 5096
Step 14: 5096 + 392 = 5488
Step 15: 5488 + 392 = 5880
Step 16: 5880 + 392 = 6272
Step 17: 6272 + 392 = 6664
Step 18: 6664 + 392 = 7056
Step 19: 7056 + 392 = 7448
Step 20: 7448 + 392 = 7840
Step 21: 7840 + 392 = 8232
Step 22: 8232 + 392 = 8624
Step 23: 8624 + 392 = 9016

So, 392*23 = 9016