Sure thing! We've got 335 and we're gonna multiply it by 13. That's the same as adding 335 to itself 13 times.
Step 1: 0 + 335 = 335
Step 2: 335 + 335 = 670
Step 3: 670 + 335 = 1005
Step 4: 1005 + 335 = 1340
Step 5: 1340 + 335 = 1675
Step 6: 1675 + 335 = 2010
Step 7: 2010 + 335 = 2345
Step 8: 2345 + 335 = 2680
Step 9: 2680 + 335 = 3015
Step 10: 3015 + 335 = 3350
Step 11: 3350 + 335 = 3685
Step 12: 3685 + 335 = 4020
Step 13: 4020 + 335 = 4355

So, 335*13 = 4355