Alright, let's work through 38882282 times 78910902 step by step
38882282 × 78910902 = 78910902 × (38882282)
+ 78910902 × 2 yielding 157821804
+ 78910902 × 80 that is equal 6312872160
+ 78910902 × 200 producing 15782180400
+ 78910902 × 2000 that is equal 157821804000
+ 78910902 × 80000 yielding 6312872160000
+ 78910902 × 800000 that is equal 63128721600000
+ 78910902 × 8000000 producing 631287216000000
+ 78910902 × 30000000 which equals 2367327060000000

= 3068235944438364
