Without delay, let's solve this. We've got 577 and we will be multiplying it by 7, that is, adding 577 to itself 7 times.
Step 1: 0 + 577 = 577
Step 2: 577 + 577 = 1154
Step 3: 1154 + 577 = 1731
Step 4: 1731 + 577 = 2308
Step 5: 2308 + 577 = 2885
Step 6: 2885 + 577 = 3462
Step 7: 3462 + 577 = 4039

So, 577*7 = 4039