Alright, let's work through 55790827 times 78023436 step by step
55790827 × 78023436 = 78023436 × (55790827)
+ 78023436 × 7 that is equal 546164052
+ 78023436 × 20 that equals 1560468720
+ 78023436 × 800 that results in 62418748800
+ 78023436 × 0000 what gives us 0
+ 78023436 × 90000 what gives us 7022109240000
+ 78023436 × 700000 what gives us 54616405200000
+ 78023436 × 5000000 which equals 390117180000000
+ 78023436 × 50000000 that results in 3901171800000000

= 4352992019821572
