Sure thing, let's get straight to it. We start with 191 and we're going to multiply it by 4, which means adding 191 to itself 4 times.
Step 1: 0 + 191 = 191
Step 2: 191 + 191 = 382
Step 3: 382 + 191 = 573
Step 4: 573 + 191 = 764

So, 191*4 = 764