No problem, we've got 1247 and 8386 to multiply
1247 × 8386 = 8386 × (1247)
+ 8386 × 7 that equals 58702
+ 8386 × 40 that equals 335440
+ 8386 × 200 what gives us 1677200
+ 8386 × 1000 that is equal 8386000

= 10457342
