No problem, we've got 3972 and 7248 to multiply
3972 × 7248 = 7248 × (3972)
+ 7248 × 2 resulting in 14496
+ 7248 × 70 what gives us 507360
+ 7248 × 900 what gives us 6523200
+ 7248 × 3000 what gives us 21744000

= 28789056
