We're going to solve 8470 multiplied by 1240
8470 × 1240 = 1240 × (8470)
+ 1240 × 0 what gives us 0
+ 1240 × 70 that equals 86800
+ 1240 × 400 which equals 496000
+ 1240 × 8000 that equals 9920000

= 10502800
