We're going to solve 9405 multiplied by 7980
9405 × 7980 = 7980 × (9405)
+ 7980 × 5 what gives us 39900
+ 7980 × 00 which equals 0
+ 7980 × 400 giving us 3192000
+ 7980 × 9000 what gives us 71820000

= 75051900
