part time job

Today, I went to Nihonbashi for my job. My job was handing out leaflets. I'm very tired because it was very sunny clear today and I had to standing leave around all day. But I have the advantage of a good pay. I want to fund my travel to Southeast Asia to fund with this pay.

In your last sentence, I assumed you wanted to say that you plan to use what you earn at your part time job to pay for future travel. Thus, you are working to fund your travel to Southeast Asia.