No problem, we've got 84379383 and 83993550 to multiply
84379383 × 83993550 = 83993550 × (84379383)
+ 83993550 × 3 that is equal 251980650
+ 83993550 × 80 what gives us 6719484000
+ 83993550 × 300 yielding 25198065000
+ 83993550 × 9000 which equals 755941950000
+ 83993550 × 70000 producing 5879548500000
+ 83993550 × 300000 yielding 25198065000000
+ 83993550 × 4000000 that is equal 335974200000000
+ 83993550 × 80000000 what gives us 6719484000000000

= 7087323924979650
