Alright, let's work through 84870030 times 7349723 step by step
84870030 × 7349723 = 7349723 × (84870030)
+ 7349723 × 0 yielding 0
+ 7349723 × 30 giving us 220491690
+ 7349723 × 000 resulting in 0
+ 7349723 × 0000 resulting in 0
+ 7349723 × 70000 that equals 514480610000
+ 7349723 × 800000 what gives us 5879778400000
+ 7349723 × 4000000 what gives us 29398892000000
+ 7349723 × 80000000 yielding 587977840000000

= 623771211501690
