Alright, let's work through 78889490 times 26889526 step by step
78889490 × 26889526 = 26889526 × (78889490)
+ 26889526 × 0 which equals 0
+ 26889526 × 90 that equals 2420057340
+ 26889526 × 400 which equals 10755810400
+ 26889526 × 9000 what gives us 242005734000
+ 26889526 × 80000 resulting in 2151162080000
+ 26889526 × 800000 resulting in 21511620800000
+ 26889526 × 8000000 that is equal 215116208000000
+ 26889526 × 70000000 what gives us 1882266820000000

= 2121300992481740
