Alright, let's work through 27638389 times 9691950 step by step
27638389 × 9691950 = 9691950 × (27638389)
+ 9691950 × 9 what gives us 87227550
+ 9691950 × 80 producing 775356000
+ 9691950 × 300 that is equal 2907585000
+ 9691950 × 8000 yielding 77535600000
+ 9691950 × 30000 that results in 290758500000
+ 9691950 × 600000 what gives us 5815170000000
+ 9691950 × 7000000 resulting in 67843650000000
+ 9691950 × 20000000 that equals 193839000000000

= 267869884268550
