Alright, let's work through 9129 times 151 step by step
9129 × 151 = 151 × (9129)
+ 151 × 9 what gives us 1359
+ 151 × 20 resulting in 3020
+ 151 × 100 that results in 15100
+ 151 × 9000 that results in 1359000

= 1378479
