Alright, let's work through 85490224 times 88678893 step by step
85490224 × 88678893 = 88678893 × (85490224)
+ 88678893 × 4 what gives us 354715572
+ 88678893 × 20 resulting in 1773577860
+ 88678893 × 200 that equals 17735778600
+ 88678893 × 0000 resulting in 0
+ 88678893 × 90000 that equals 7981100370000
+ 88678893 × 400000 that is equal 35471557200000
+ 88678893 × 5000000 that is equal 443394465000000
+ 88678893 × 80000000 resulting in 7094311440000000

= 7581178426642032
