We're going to solve 4066 multiplied by 9890
4066 × 9890 = 9890 × (4066)
+ 9890 × 6 resulting in 59340
+ 9890 × 60 which equals 593400
+ 9890 × 000 which equals 0
+ 9890 × 4000 what gives us 39560000

= 40212740
