Sure thing! We've got 537 and we're gonna multiply it by 7. That's the same as adding 537 to itself 7 times.
Step 1: 0 + 537 = 537
Step 2: 537 + 537 = 1074
Step 3: 1074 + 537 = 1611
Step 4: 1611 + 537 = 2148
Step 5: 2148 + 537 = 2685
Step 6: 2685 + 537 = 3222
Step 7: 3222 + 537 = 3759

So, 537*7 = 3759