No problem, we've got 4728 and 5603 to multiply
4728 × 5603 = 5603 × (4728)
+ 5603 × 8 what gives us 44824
+ 5603 × 20 resulting in 112060
+ 5603 × 700 that results in 3922100
+ 5603 × 4000 that is equal 22412000

= 26490984
