We're going to solve 9800 multiplied by 7978
9800 × 7978 = 7978 × (9800)
+ 7978 × 0 that is equal 0
+ 7978 × 00 producing 0
+ 7978 × 800 producing 6382400
+ 7978 × 9000 which equals 71802000

= 78184400
