No problem, we've got 3870 and 1180 to multiply
3870 × 1180 = 1180 × (3870)
+ 1180 × 0 giving us 0
+ 1180 × 70 resulting in 82600
+ 1180 × 800 giving us 944000
+ 1180 × 3000 which equals 3540000

= 4566600
