Teacher:You are given a math word problem and you are supposed to apply division mathematical operator on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
Teacher: Now, understand the problem? Solve this instance: Context: For the walls of the house he would use 11 nails in all to secure large planks of wood. If each plank needs 3 pieces of nails to be secured and an additional 8 nails were used. 

 Question: How many planks does John need for the house wall?
Student:
1