Your task is to first find the largest number in each of the two boxes and then add up the two numbers. Submit your answer in the box below.

Box 1 Box 2
{% for r in mat1 %} {% for c in r %} {% endfor %} {% endfor %}
{{ c }}
{% for r in mat2 %} {% for c in r %} {% endfor %} {% endfor %}
{{ c }}