I'm trying to say "I played a game for a TOTAL of 1880 hours or 78 days, over a 5 year period."

I'm a 102 student and we aren't even through the first Genki book yet so this is very hard for me to express with my current knowledge.

I found this and i think i can adapt it to work for me. When is it appropriate to choose にわたって or を通じて in regard to time?


'I studied throughout the year without taking a holiday break (possibly for a few years) for the exam.'

Is this translation/adaption correct?


'Over a 5 year period, I played a game for a TOTAL of around 1880 hours or 78 days.'


There is a word that native speakers frequently use but Japanese-learners rarely, if ever, do to express the idea of "cumulative total" without using a big Sino-loanword. That word is 「延{の}べ」.

You can say:

「5年間{ねんかん}で延べにして1,880時間{じかん}(78日間{にちかん})ゲームをした。」 ,

「5年間で延べにして1,880時間(日数{にっすう}にして78日間)ゲームをした。」, etc.

If you want to sound a little more formal or technical by using a Sino-loanword, you can replace the 「延べにして」 part by 「累計{るいけい}で」.

Note I did not use 「5年を通じて」 because it is not too natural-sounding.

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