No problem, we've got 4389 and 2528 to multiply
4389 × 2528 = 2528 × (4389)
+ 2528 × 9 that results in 22752
+ 2528 × 80 that is equal 202240
+ 2528 × 300 which equals 758400
+ 2528 × 4000 resulting in 10112000

= 11095392
