No problem, we've got 4257 and 1070 to multiply
4257 × 1070 = 1070 × (4257)
+ 1070 × 7 that is equal 7490
+ 1070 × 50 giving us 53500
+ 1070 × 200 that results in 214000
+ 1070 × 4000 which equals 4280000

= 4554990
