No problem, we've got 83357814 and 81431983 to multiply
83357814 × 81431983 = 81431983 × (83357814)
+ 81431983 × 4 what gives us 325727932
+ 81431983 × 10 which equals 814319830
+ 81431983 × 800 yielding 65145586400
+ 81431983 × 7000 what gives us 570023881000
+ 81431983 × 50000 that results in 4071599150000
+ 81431983 × 300000 producing 24429594900000
+ 81431983 × 3000000 that equals 244295949000000
+ 81431983 × 80000000 giving us 6514558640000000

= 6787992092565162
