OK, let's work through this together. We're starting with 83 and we're going to multiply it by 7, which means we add 83 to itself 7 times.
Step 1: 0 + 83 = 83
Step 2: 83 + 83 = 166
Step 3: 166 + 83 = 249
Step 4: 249 + 83 = 332
Step 5: 332 + 83 = 415
Step 6: 415 + 83 = 498
Step 7: 498 + 83 = 581

So, 83*7 = 581