No problem, we've got 80397956 and 99078867 to multiply
80397956 × 99078867 = 99078867 × (80397956)
+ 99078867 × 6 yielding 594473202
+ 99078867 × 50 that results in 4953943350
+ 99078867 × 900 giving us 89170980300
+ 99078867 × 7000 that is equal 693552069000
+ 99078867 × 90000 that is equal 8917098030000
+ 99078867 × 300000 that equals 29723660100000
+ 99078867 × 0000000 resulting in 0
+ 99078867 × 80000000 what gives us 7926309360000000

= 7965738389595852
