We're going to solve 1240 multiplied by 4137
1240 × 4137 = 4137 × (1240)
+ 4137 × 0 what gives us 0
+ 4137 × 40 what gives us 165480
+ 4137 × 200 yielding 827400
+ 4137 × 1000 that equals 4137000

= 5129880
