1)
How do we find 87,000 from Yisachar?
1.
'Rashi': This includes Bnei Tola, Bnei Uzi and all David's valiant soldiers.
2.
Radak, Malbim: This includes from Tola's brothers Pu'ah, Yashuv and Shimron.
2)
What do we learn from "Hisyachsam la'Kol"?
1.
Malbim: Each one's lineage was traced to his father's house.
2.
Malbim (6): This is the lineage of Bnei Yisachar, except for his descendant Binyamin, whose seed was divided into many Batei Avos.
