Why does it say "v'El Ami"?
Radak: This is like v'Al Ami. Similarly, "va'Yach Es ha'Pelishti El Mitzcho" (Shmuel I, 17:49) is like Al.
What is the meaning of "Yadu Goral"?
Rashi: This is like "va'Yadu Even Bi" (Eichah 3:53; they threw).
Radak: They cast lotteries among themselves about Yisrael - this will be yours, and this mine (Malbim - who will take them for slaves). This is like "Leyados Es Karnos ha'Goyim" (Zecharyah 2:4). It should say Yeyadu; because the two Yudim are adjacent, the Yud of the root is omitted, and its vowel is placed on the Yud of the conjugation.
How did they give "ha'Yeled ba'Zonah [veha'Yaldah Machru va'Yayin]"?
Gitin 6b: This refers to people of Bavel who come to Eretz Yisrael (to learn, and leave their families in Bavel; the boy must work for food).
Radak: They gave a child for a Zonah's wage. Malbim - this shows how disgraced Yisrael were in their eyes!