No problem, we've got 80810272 and 10096813 to multiply
80810272 × 10096813 = 10096813 × (80810272)
+ 10096813 × 2 that equals 20193626
+ 10096813 × 70 yielding 706776910
+ 10096813 × 200 what gives us 2019362600
+ 10096813 × 0000 giving us 0
+ 10096813 × 10000 what gives us 100968130000
+ 10096813 × 800000 that is equal 8077450400000
+ 10096813 × 0000000 producing 0
+ 10096813 × 80000000 which equals 807745040000000

= 815926204863136
