No problem, we've got 1457 and 5220 to multiply
1457 × 5220 = 5220 × (1457)
+ 5220 × 7 what gives us 36540
+ 5220 × 50 yielding 261000
+ 5220 × 400 that is equal 2088000
+ 5220 × 1000 that equals 5220000

= 7605540
