Alright, let's work through 3870 times 894 step by step
3870 × 894 = 894 × (3870)
+ 894 × 0 that results in 0
+ 894 × 70 that results in 62580
+ 894 × 800 that is equal 715200
+ 894 × 3000 producing 2682000

= 3459780
