No problem, we've got 86445712 and 77788816 to multiply
86445712 × 77788816 = 77788816 × (86445712)
+ 77788816 × 2 which equals 155577632
+ 77788816 × 10 giving us 777888160
+ 77788816 × 700 resulting in 54452171200
+ 77788816 × 5000 yielding 388944080000
+ 77788816 × 40000 what gives us 3111552640000
+ 77788816 × 400000 what gives us 31115526400000
+ 77788816 × 6000000 that equals 466732896000000
+ 77788816 × 80000000 that results in 6223105280000000

= 6724509584756992
