Alright, let's work through 1685 times 7020 step by step
1685 × 7020 = 7020 × (1685)
+ 7020 × 5 that is equal 35100
+ 7020 × 80 yielding 561600
+ 7020 × 600 resulting in 4212000
+ 7020 × 1000 what gives us 7020000

= 11828700
