You are given a math word problem and you are supposed to apply a single mathematical operator like addition, subtraction, multiplication, or division on the numbers embedded in the text to answer the following question and then only report the final numerical answer.

since the result of the vote was close it was decided that they will balance the menu with both meat and vegetables . this decision was agreed upon by 154 third grade students and 237 4 grade students . how many students agreed with the decision ?
391