cycle, interval

I decide the interval.

私は周期を決めます

I decide the interval because the house gets dirty quickly.

私は家がすぐ汚れるので、周期を決めます

I decide the interval with my family because the house gets dirty quickly.

私は家がすぐ汚れるので、家族と周期を決めます

I decide the interval with my family on paper because the house gets dirty quickly.

私は家がすぐ汚れるので、家族と紙に周期を決めます

I decide the interval with my family on paper in pencil because the house gets dirty quickly.

私は家がすぐ汚れるので、家族と紙に鉛筆で周期を決めます