Alright, let's work through 3715 times 140 step by step
3715 × 140 = 140 × (3715)
+ 140 × 5 resulting in 700
+ 140 × 10 what gives us 1400
+ 140 × 700 resulting in 98000
+ 140 × 3000 what gives us 420000

= 520100
