Alright, let's work through 83421013 times 11110438 step by step
83421013 × 11110438 = 11110438 × (83421013)
+ 11110438 × 3 that results in 33331314
+ 11110438 × 10 what gives us 111104380
+ 11110438 × 000 that equals 0
+ 11110438 × 1000 that is equal 11110438000
+ 11110438 × 20000 yielding 222208760000
+ 11110438 × 400000 resulting in 4444175200000
+ 11110438 × 3000000 which equals 33331314000000
+ 11110438 × 80000000 that results in 888835040000000

= 926843992833694
