Alright, let's work through 26397690 times 27351365 step by step
26397690 × 27351365 = 27351365 × (26397690)
+ 27351365 × 0 that results in 0
+ 27351365 × 90 that equals 2461622850
+ 27351365 × 600 resulting in 16410819000
+ 27351365 × 7000 producing 191459555000
+ 27351365 × 90000 that is equal 2461622850000
+ 27351365 × 300000 that results in 8205409500000
+ 27351365 × 6000000 that equals 164108190000000
+ 27351365 × 20000000 which equals 547027300000000

= 722012854346850
