No problem, we've got 2070845 and 10420 to multiply
2070845 × 10420 = 10420 × (2070845)
+ 10420 × 5 which equals 52100
+ 10420 × 40 what gives us 416800
+ 10420 × 800 that is equal 8336000
+ 10420 × 0000 what gives us 0
+ 10420 × 70000 what gives us 729400000
+ 10420 × 000000 that is equal 0
+ 10420 × 2000000 what gives us 20840000000

= 21578204900
