Alright, let's work through 26121379 times 27857256 step by step
26121379 × 27857256 = 27857256 × (26121379)
+ 27857256 × 9 resulting in 250715304
+ 27857256 × 70 which equals 1950007920
+ 27857256 × 300 which equals 8357176800
+ 27857256 × 1000 what gives us 27857256000
+ 27857256 × 20000 that results in 557145120000
+ 27857256 × 100000 producing 2785725600000
+ 27857256 × 6000000 that equals 167143536000000
+ 27857256 × 20000000 producing 557145120000000

= 727669941876024
