No problem, we've got 5457 and 1543 to multiply
5457 × 1543 = 1543 × (5457)
+ 1543 × 7 that results in 10801
+ 1543 × 50 which equals 77150
+ 1543 × 400 what gives us 617200
+ 1543 × 5000 that equals 7715000

= 8420151
