No problem, we've got 78872454 and 4344263 to multiply
78872454 × 4344263 = 4344263 × (78872454)
+ 4344263 × 4 what gives us 17377052
+ 4344263 × 50 that results in 217213150
+ 4344263 × 400 yielding 1737705200
+ 4344263 × 2000 yielding 8688526000
+ 4344263 × 70000 that results in 304098410000
+ 4344263 × 800000 yielding 3475410400000
+ 4344263 × 8000000 yielding 34754104000000
+ 4344263 × 70000000 resulting in 304098410000000

= 342642683631402
