Alright, let's work through 6743 times 3135 step by step
6743 × 3135 = 3135 × (6743)
+ 3135 × 3 which equals 9405
+ 3135 × 40 that results in 125400
+ 3135 × 700 that results in 2194500
+ 3135 × 6000 resulting in 18810000

= 21139305
