Alright, let's work through 83196333 times 67921631 step by step
83196333 × 67921631 = 67921631 × (83196333)
+ 67921631 × 3 producing 203764893
+ 67921631 × 30 producing 2037648930
+ 67921631 × 300 resulting in 20376489300
+ 67921631 × 6000 which equals 407529786000
+ 67921631 × 90000 what gives us 6112946790000
+ 67921631 × 100000 resulting in 6792163100000
+ 67921631 × 3000000 which equals 203764893000000
+ 67921631 × 80000000 that equals 5433730480000000

= 5650830630579123
