No problem, we've got 18310489 and 38668487 to multiply
18310489 × 38668487 = 38668487 × (18310489)
+ 38668487 × 9 that equals 348016383
+ 38668487 × 80 which equals 3093478960
+ 38668487 × 400 that results in 15467394800
+ 38668487 × 0000 which equals 0
+ 38668487 × 10000 giving us 386684870000
+ 38668487 × 300000 that equals 11600546100000
+ 38668487 × 8000000 that equals 309347896000000
+ 38668487 × 10000000 that is equal 386684870000000

= 708038905860143
