Alright, let's work through 80354714 times 17901546 step by step
80354714 × 17901546 = 17901546 × (80354714)
+ 17901546 × 4 giving us 71606184
+ 17901546 × 10 what gives us 179015460
+ 17901546 × 700 resulting in 12531082200
+ 17901546 × 4000 producing 71606184000
+ 17901546 × 50000 which equals 895077300000
+ 17901546 × 300000 that is equal 5370463800000
+ 17901546 × 0000000 yielding 0
+ 17901546 × 80000000 producing 1432123680000000

= 1438473608987844
