Sure thing, let's get straight to it. We start with 251 and we're going to multiply it by 6, which means adding 251 to itself 6 times.
Step 1: 0 + 251 = 251
Step 2: 251 + 251 = 502
Step 3: 502 + 251 = 753
Step 4: 753 + 251 = 1004
Step 5: 1004 + 251 = 1255
Step 6: 1255 + 251 = 1506

So, 251*6 = 1506