No problem, we've got 78639675 and 40315448 to multiply
78639675 × 40315448 = 40315448 × (78639675)
+ 40315448 × 5 resulting in 201577240
+ 40315448 × 70 giving us 2822081360
+ 40315448 × 600 what gives us 24189268800
+ 40315448 × 9000 what gives us 362839032000
+ 40315448 × 30000 which equals 1209463440000
+ 40315448 × 600000 that is equal 24189268800000
+ 40315448 × 8000000 producing 322523584000000
+ 40315448 × 70000000 that is equal 2822081360000000

= 3170393728199400
