We're going to solve 1980 multiplied by 9858
1980 × 9858 = 9858 × (1980)
+ 9858 × 0 that equals 0
+ 9858 × 80 what gives us 788640
+ 9858 × 900 which equals 8872200
+ 9858 × 1000 that equals 9858000

= 19518840
