We're going to solve 1640 multiplied by 7245
1640 × 7245 = 7245 × (1640)
+ 7245 × 0 that is equal 0
+ 7245 × 40 which equals 289800
+ 7245 × 600 resulting in 4347000
+ 7245 × 1000 that equals 7245000

= 11881800
