OK, let's work through this together. We're starting with 16 and we're going to multiply it by 13, which means we add 16 to itself 13 times.
Step 1: 0 + 16 = 16
Step 2: 16 + 16 = 32
Step 3: 32 + 16 = 48
Step 4: 48 + 16 = 64
Step 5: 64 + 16 = 80
Step 6: 80 + 16 = 96
Step 7: 96 + 16 = 112
Step 8: 112 + 16 = 128
Step 9: 128 + 16 = 144
Step 10: 144 + 16 = 160
Step 11: 160 + 16 = 176
Step 12: 176 + 16 = 192
Step 13: 192 + 16 = 208

So, 16*13 = 208