Alright, let's work through 9428 times 5205 step by step
9428 × 5205 = 5205 × (9428)
+ 5205 × 8 that is equal 41640
+ 5205 × 20 yielding 104100
+ 5205 × 400 that is equal 2082000
+ 5205 × 9000 what gives us 46845000

= 49072740
