Let's get this math done. We have 310 and we're going to multiply it by 11. This is the same as taking 310 and adding it to itself 11 times.
Step 1: 0 + 310 = 310
Step 2: 310 + 310 = 620
Step 3: 620 + 310 = 930
Step 4: 930 + 310 = 1240
Step 5: 1240 + 310 = 1550
Step 6: 1550 + 310 = 1860
Step 7: 1860 + 310 = 2170
Step 8: 2170 + 310 = 2480
Step 9: 2480 + 310 = 2790
Step 10: 2790 + 310 = 3100
Step 11: 3100 + 310 = 3410

So, 310*11 = 3410