Alright, let's work through 9407 times 9646 step by step
9407 × 9646 = 9646 × (9407)
+ 9646 × 7 that is equal 67522
+ 9646 × 00 producing 0
+ 9646 × 400 giving us 3858400
+ 9646 × 9000 what gives us 86814000

= 90739922
