Alright, let's work through 9129 times 7977 step by step
9129 × 7977 = 7977 × (9129)
+ 7977 × 9 giving us 71793
+ 7977 × 20 resulting in 159540
+ 7977 × 100 that is equal 797700
+ 7977 × 9000 that is equal 71793000

= 72822033
