Sure thing, let's get straight to it. We start with 260 and we're going to multiply it by 18, which means adding 260 to itself 18 times.
Step 1: 0 + 260 = 260
Step 2: 260 + 260 = 520
Step 3: 520 + 260 = 780
Step 4: 780 + 260 = 1040
Step 5: 1040 + 260 = 1300
Step 6: 1300 + 260 = 1560
Step 7: 1560 + 260 = 1820
Step 8: 1820 + 260 = 2080
Step 9: 2080 + 260 = 2340
Step 10: 2340 + 260 = 2600
Step 11: 2600 + 260 = 2860
Step 12: 2860 + 260 = 3120
Step 13: 3120 + 260 = 3380
Step 14: 3380 + 260 = 3640
Step 15: 3640 + 260 = 3900
Step 16: 3900 + 260 = 4160
Step 17: 4160 + 260 = 4420
Step 18: 4420 + 260 = 4680

So, 260*18 = 4680