Alright, let's work through 9139 times 7642 step by step
9139 × 7642 = 7642 × (9139)
+ 7642 × 9 which equals 68778
+ 7642 × 30 what gives us 229260
+ 7642 × 100 giving us 764200
+ 7642 × 9000 that is equal 68778000

= 69840238
