No problem, we've got 7877 and 5007 to multiply
7877 × 5007 = 5007 × (7877)
+ 5007 × 7 giving us 35049
+ 5007 × 70 resulting in 350490
+ 5007 × 800 that equals 4005600
+ 5007 × 7000 resulting in 35049000

= 39440139
