No problem, we've got 4385 and 9121 to multiply
4385 × 9121 = 9121 × (4385)
+ 9121 × 5 giving us 45605
+ 9121 × 80 what gives us 729680
+ 9121 × 300 that is equal 2736300
+ 9121 × 4000 that equals 36484000

= 39995585
