Alright, let's work through 80445686 times 70098370 step by step
80445686 × 70098370 = 70098370 × (80445686)
+ 70098370 × 6 which equals 420590220
+ 70098370 × 80 that results in 5607869600
+ 70098370 × 600 resulting in 42059022000
+ 70098370 × 5000 what gives us 350491850000
+ 70098370 × 40000 that results in 2803934800000
+ 70098370 × 400000 what gives us 28039348000000
+ 70098370 × 0000000 what gives us 0
+ 70098370 × 80000000 producing 5607869600000000

= 5639111462131820
