Alright, let's work through 9837 times 4907 step by step
9837 × 4907 = 4907 × (9837)
+ 4907 × 7 resulting in 34349
+ 4907 × 30 resulting in 147210
+ 4907 × 800 which equals 3925600
+ 4907 × 9000 that is equal 44163000

= 48270159
