Alright, let's work through 6715 times 1143 step by step
6715 × 1143 = 1143 × (6715)
+ 1143 × 5 giving us 5715
+ 1143 × 10 what gives us 11430
+ 1143 × 700 resulting in 800100
+ 1143 × 6000 which equals 6858000

= 7675245
