I'll leave the garbage in front of the door. There are about 10 paper bags' worth.
I'll put the garbage by the door. I have about 10 paper bags of it.
ーI'll leave the garbage in front of the door. There are about 10 paper bags' worth.
「ドアの前にゴミを置いておくね。紙袋約10枚分あるから」
to leave the garbage で「ゴミを置いておく」
in front of the door で「扉の前に」
10 paper bags' worth で「紙袋10枚分」
ーI'll put the garbage by the door. I have about 10 paper bags of it.
「ドアのところにゴミを置いておくね。紙袋10袋くらいのゴミがあるから」
to put the garbage で「ゴミを置く」
by the door で「ドアのそばに」
I have about 10 paper bags of it. で「約10袋のゴミがある」
ご参考まで！
カナダ 
