OK, let's work through this together. We're starting with 835 and we're going to multiply it by 5, which means we add 835 to itself 5 times.
Step 1: 0 + 835 = 835
Step 2: 835 + 835 = 1670
Step 3: 1670 + 835 = 2505
Step 4: 2505 + 835 = 3340
Step 5: 3340 + 835 = 4175

So, 835*5 = 4175