Alright, let's work through 5707 times 1388 step by step
5707 × 1388 = 1388 × (5707)
+ 1388 × 7 giving us 9716
+ 1388 × 00 that results in 0
+ 1388 × 700 what gives us 971600
+ 1388 × 5000 that results in 6940000

= 7921316
