No problem, we've got 5388 and 1381 to multiply
5388 × 1381 = 1381 × (5388)
+ 1381 × 8 what gives us 11048
+ 1381 × 80 giving us 110480
+ 1381 × 300 that is equal 414300
+ 1381 × 5000 giving us 6905000

= 7440828
