We're going to solve 4385 multiplied by 1090
4385 × 1090 = 1090 × (4385)
+ 1090 × 5 resulting in 5450
+ 1090 × 80 which equals 87200
+ 1090 × 300 resulting in 327000
+ 1090 × 4000 that results in 4360000

= 4779650
