No problem, we've got 5781 and 4036 to multiply
5781 × 4036 = 4036 × (5781)
+ 4036 × 1 that equals 4036
+ 4036 × 80 giving us 322880
+ 4036 × 700 giving us 2825200
+ 4036 × 5000 resulting in 20180000

= 23332116
