Alright, let's work through 3112 times 9907 step by step
3112 × 9907 = 9907 × (3112)
+ 9907 × 2 what gives us 19814
+ 9907 × 10 producing 99070
+ 9907 × 100 resulting in 990700
+ 9907 × 3000 what gives us 29721000

= 30830584
