No problem, we've got 17817992 and 17946785 to multiply
17817992 × 17946785 = 17946785 × (17817992)
+ 17946785 × 2 that equals 35893570
+ 17946785 × 90 resulting in 1615210650
+ 17946785 × 900 which equals 16152106500
+ 17946785 × 7000 resulting in 125627495000
+ 17946785 × 10000 which equals 179467850000
+ 17946785 × 800000 that equals 14357428000000
+ 17946785 × 7000000 what gives us 125627495000000
+ 17946785 × 10000000 producing 179467850000000

= 319775671555720
