Alright, let's work through 2686317 times 99643267 step by step
2686317 × 99643267 = 99643267 × (2686317)
+ 99643267 × 7 giving us 697502869
+ 99643267 × 10 what gives us 996432670
+ 99643267 × 300 that is equal 29892980100
+ 99643267 × 6000 yielding 597859602000
+ 99643267 × 80000 that is equal 7971461360000
+ 99643267 × 600000 giving us 59785960200000
+ 99643267 × 2000000 which equals 199286534000000

= 267673402077639
