Alright, let's work through 85195198 times 81521274 step by step
85195198 × 81521274 = 81521274 × (85195198)
+ 81521274 × 8 yielding 652170192
+ 81521274 × 90 resulting in 7336914660
+ 81521274 × 100 giving us 8152127400
+ 81521274 × 5000 yielding 407606370000
+ 81521274 × 90000 resulting in 7336914660000
+ 81521274 × 100000 resulting in 8152127400000
+ 81521274 × 5000000 which equals 407606370000000
+ 81521274 × 80000000 that results in 6521701920000000

= 6945221079642252
