We're going to solve 7415 multiplied by 1603
7415 × 1603 = 1603 × (7415)
+ 1603 × 5 yielding 8015
+ 1603 × 10 what gives us 16030
+ 1603 × 400 yielding 641200
+ 1603 × 7000 that is equal 11221000

= 11886245
