干五 meaning in Chinese

kango
mikigo

For five months of work
干五个月？
When i wak d it was broad day , the weather clear , and the storm abated , so that the sea did not rage and swell as before : but that which surpris d me most , was , that the ship was lifted off in the night from the sand where she lay , by the swelling of the tyde , and was driven up almost as far as the rock which i first mention d , where i had been so bruis d by the dashing me against it ; this being within about a mile from the shore where i was , and the ship seeming to stand upright still , i wish d my self on board , that , at least , i might save some necessary things for my use
我先把船上所能找到的木板都铺在木排上，然后考虑了一下所需要的东西。我打开三只船员用的箱子，把里面的东西倒空，再把它们一一吊到木排上。第一只箱子里我主要装食品：粮食面包米三块荷兰酪干五块羊肉干，以及一些剩下来的欧洲麦子-这些麦子原来是喂船上的家禽的。