Alright, let's solve this math problem step by step. First, we have the number 436. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 15. So, we're going to take the number 436 and add it to itself 15 times.
Step 1: 0 + 436 = 436
Step 2: 436 + 436 = 872
Step 3: 872 + 436 = 1308
Step 4: 1308 + 436 = 1744
Step 5: 1744 + 436 = 2180
Step 6: 2180 + 436 = 2616
Step 7: 2616 + 436 = 3052
Step 8: 3052 + 436 = 3488
Step 9: 3488 + 436 = 3924
Step 10: 3924 + 436 = 4360
Step 11: 4360 + 436 = 4796
Step 12: 4796 + 436 = 5232
Step 13: 5232 + 436 = 5668
Step 14: 5668 + 436 = 6104
Step 15: 6104 + 436 = 6540

So, 436*15 = 6540