We're going to solve 84009860 multiplied by 80010011
84009860 × 80010011 = 80010011 × (84009860)
+ 80010011 × 0 that equals 0
+ 80010011 × 60 which equals 4800600660
+ 80010011 × 800 that is equal 64008008800
+ 80010011 × 9000 producing 720090099000
+ 80010011 × 00000 that is equal 0
+ 80010011 × 000000 which equals 0
+ 80010011 × 4000000 that is equal 320040044000000
+ 80010011 × 80000000 what gives us 6400800880000000

= 6721629822708460
