No problem, we've got 5428 and 1145 to multiply
5428 × 1145 = 1145 × (5428)
+ 1145 × 8 resulting in 9160
+ 1145 × 20 what gives us 22900
+ 1145 × 400 that is equal 458000
+ 1145 × 5000 resulting in 5725000

= 6215060
