Is this expression correct? First, Total 900 hours studying within 20 months, and 1050 hr within 23 mo, then by 1300 hr within 28 mo, I'm going to get a score of over 900 on TOEIC . Thank you!

29 May 2015

Native language
Japanese Near fluent
Closed question
Question about English (US)
Is this expression correct?

First, Total 900 hours studying within 20 months,
and 1050 hr within 23 mo,
then by 1300 hr within 28 mo,
I'm going to get a score of over 900 on TOEIC .

Thank you!
下記の日本語を英語にしましたが合っていますでしょうか。

まず、900時間の勉強を20ヶ月以内にします、そして 23ヶ月以内に1050時間します、そして 28ヶ月以内に1300時間の勉強をしてTOEIC スコア 900以上を取ります!

よろしくお願いします。

Native language
English (US) Traditional Chinese (Hong Kong) Traditional Chinese (Taiwan) Near fluent

Native language
Japanese Near fluent

Native language
English (US) Traditional Chinese (Hong Kong) Traditional Chinese (Taiwan) Near fluent
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