Alright, let's work through 3120 times 7136 step by step
3120 × 7136 = 7136 × (3120)
+ 7136 × 0 giving us 0
+ 7136 × 20 yielding 142720
+ 7136 × 100 producing 713600
+ 7136 × 3000 that is equal 21408000

= 22264320
