Alright, let's work through 9407 times 2147 step by step
9407 × 2147 = 2147 × (9407)
+ 2147 × 7 giving us 15029
+ 2147 × 00 which equals 0
+ 2147 × 400 that results in 858800
+ 2147 × 9000 giving us 19323000

= 20196829
