Alright, let's work through 68354040 times 45874172 step by step
68354040 × 45874172 = 45874172 × (68354040)
+ 45874172 × 0 which equals 0
+ 45874172 × 40 that is equal 1834966880
+ 45874172 × 000 giving us 0
+ 45874172 × 4000 yielding 183496688000
+ 45874172 × 50000 which equals 2293708600000
+ 45874172 × 300000 that equals 13762251600000
+ 45874172 × 8000000 producing 366993376000000
+ 45874172 × 60000000 giving us 2752450320000000

= 3135684987854880
