No problem, we've got 77109668 and 5186679 to multiply
77109668 × 5186679 = 5186679 × (77109668)
+ 5186679 × 8 producing 41493432
+ 5186679 × 60 that results in 311200740
+ 5186679 × 600 which equals 3112007400
+ 5186679 × 9000 what gives us 46680111000
+ 5186679 × 00000 that is equal 0
+ 5186679 × 100000 producing 518667900000
+ 5186679 × 7000000 resulting in 36306753000000
+ 5186679 × 70000000 giving us 363067530000000

= 399943095712572
