1)
Why did he say "keha'Yom"?
1.
Malbim: Now is a year of hunger, and they engage in building the wall, therefore they became poor and hungry.
2)
How much is "Me'as ha'Kesef"?
1.
Rashi: The much Kesef that they owe you, [and the grain, wine...]
2.
Ibn Ezra: It is 100 weights of Kesef [or of grain, wine...]
3.
Malbim: Even if it is 100 silver [coins, pardon them].
