No problem, we've got 4423 and 4526 to multiply
4423 × 4526 = 4526 × (4423)
+ 4526 × 3 what gives us 13578
+ 4526 × 20 what gives us 90520
+ 4526 × 400 resulting in 1810400
+ 4526 × 4000 which equals 18104000

= 20018498
