Alright, let's work through 7155 times 2947 step by step
7155 × 2947 = 2947 × (7155)
+ 2947 × 5 that is equal 14735
+ 2947 × 50 what gives us 147350
+ 2947 × 100 which equals 294700
+ 2947 × 7000 producing 20629000

= 21085785
