How to write big numbers in Korean?
When I tried to write down a big numbers I realized that it is very hard (for me). So I tried with couple of numbers but I don't know if they're correct. Please help me if I'm wrong!

58 347 - 오십팔만삼백사십칠
391 572 - 삼백구십일십만오백칠십이
7 624 398 - 칠백만륙백이십사십만삼백구십팔

I need to practice a lot to get used to use this numbers.

Question

How to write big numbers in Korean?
When I tried to write down a big numbers I realized that it is very hard (for me). So I tried with couple of numbers but I don't know if they're correct. Please help me if I'm wrong!

58 347 - 오십팔만삼백사십칠
391 572 - 삼백구십일십만오백칠십이
7 624 398 - 칠백만륙백이십사십만삼백구십팔

I need to practice a lot to get used to use this numbers.

Answer

It's pretty easy to read big numbers.
58 347

00007 = 칠
00047 = 사십(40) + 칠(7)
00347 = 삼백(300) + 사십칠(47) 
08347 = 팔천(8000) + 삼백사십칠(347)
58347 = 오만(50000) + 팔천 삼백사십칠(8347)

000002 = 이
000072 = 칠십(70) + 이(2)
000572 = 오백(500) + 칠십이(72)
001572 = 천(1000) + 오백 칠십이(572)
091572 = 구만(90000) + 천오백 칠십이(1572)
391572 =  삼십구만(390000) + 천오백 칠십이(1572)

0000008 = 팔
0000098 = 구십(90) + 팔(8)
0000398 = 삼백(300) + 구십 팔(98) 
0004398 = 사천(4000) + 삼백 구십 팔(398)
0024398 = 이만(20000) + 사천 삼백 구십 팔(4398)
0624398 = 육십 이만(620000) + 사천 삼백 구십 팔(4398)
7624398 = 칠백 육십 이만(7620000) + 사천 삼백 구십 팔(4398)

\^o^/

Answer

5    8347 - 오만                팔천삼백사십칠
39  1572 - 삼십구만          천오백칠십이
762 4398 - 칠백육십이만   사천삼백구십팔

as you can see you need to count by 10000.

Answer

58,347= 오만팔천삼백사십칠.
391,572= 삼십구만일천오백칠십이.
7,624,398= 칠백육십이만사천삼백구십팔.