No problem, we've got 4128 and 7590 to multiply
4128 × 7590 = 7590 × (4128)
+ 7590 × 8 that equals 60720
+ 7590 × 20 that is equal 151800
+ 7590 × 100 that is equal 759000
+ 7590 × 4000 resulting in 30360000

= 31331520
