No problem, we've got 4078 and 7844 to multiply
4078 × 7844 = 7844 × (4078)
+ 7844 × 8 resulting in 62752
+ 7844 × 70 what gives us 549080
+ 7844 × 000 that is equal 0
+ 7844 × 4000 resulting in 31376000

= 31987832
