No problem, we've got 5419 and 7891 to multiply
5419 × 7891 = 7891 × (5419)
+ 7891 × 9 which equals 71019
+ 7891 × 10 that equals 78910
+ 7891 × 400 that is equal 3156400
+ 7891 × 5000 which equals 39455000

= 42761329
