OK, let's work through this together. We're starting with 257 and we're going to multiply it by 9, which means we add 257 to itself 9 times.
Step 1: 0 + 257 = 257
Step 2: 257 + 257 = 514
Step 3: 514 + 257 = 771
Step 4: 771 + 257 = 1028
Step 5: 1028 + 257 = 1285
Step 6: 1285 + 257 = 1542
Step 7: 1542 + 257 = 1799
Step 8: 1799 + 257 = 2056
Step 9: 2056 + 257 = 2313

So, 257*9 = 2313