Alright, let's work through 85386838 times 42885031 step by step
85386838 × 42885031 = 42885031 × (85386838)
+ 42885031 × 8 giving us 343080248
+ 42885031 × 30 that equals 1286550930
+ 42885031 × 800 that is equal 34308024800
+ 42885031 × 6000 resulting in 257310186000
+ 42885031 × 80000 what gives us 3430802480000
+ 42885031 × 300000 giving us 12865509300000
+ 42885031 × 5000000 that is equal 214425155000000
+ 42885031 × 80000000 giving us 3430802480000000

= 3661817194621978
