Alright, let's work through 85221110 times 15369606 step by step
85221110 × 15369606 = 15369606 × (85221110)
+ 15369606 × 0 that equals 0
+ 15369606 × 10 that results in 153696060
+ 15369606 × 100 producing 1536960600
+ 15369606 × 1000 that results in 15369606000
+ 15369606 × 20000 producing 307392120000
+ 15369606 × 200000 resulting in 3073921200000
+ 15369606 × 5000000 producing 76848030000000
+ 15369606 × 80000000 giving us 1229568480000000

= 1309814883582660
