Alright, let's work through 2120 times 3707 step by step
2120 × 3707 = 3707 × (2120)
+ 3707 × 0 that is equal 0
+ 3707 × 20 what gives us 74140
+ 3707 × 100 what gives us 370700
+ 3707 × 2000 which equals 7414000

= 7858840
