Alright, let's work through 98999080 times 99705425 step by step
98999080 × 99705425 = 99705425 × (98999080)
+ 99705425 × 0 what gives us 0
+ 99705425 × 80 that is equal 7976434000
+ 99705425 × 000 that is equal 0
+ 99705425 × 9000 resulting in 897348825000
+ 99705425 × 90000 giving us 8973488250000
+ 99705425 × 900000 that results in 89734882500000
+ 99705425 × 8000000 which equals 797643400000000
+ 99705425 × 90000000 which equals 8973488250000000

= 9870745346009000
