No problem, we've got 8394494 and 13864282 to multiply
8394494 × 13864282 = 13864282 × (8394494)
+ 13864282 × 4 giving us 55457128
+ 13864282 × 90 which equals 1247785380
+ 13864282 × 400 which equals 5545712800
+ 13864282 × 4000 that equals 55457128000
+ 13864282 × 90000 that equals 1247785380000
+ 13864282 × 300000 giving us 4159284600000
+ 13864282 × 8000000 that equals 110914256000000

= 116383632063308
