1. (5 points) Calculate: $(70 \div 4+90 \div 4) \div 4=$
【Analysis】We can start the calculation from inside the parentheses, and the two divisions within the parentheses can be converted into fractional forms, and then calculate the final result.

【Solution】According to the analysis, the original expression is $(70 \div 4+90 \div 4) \div 4$
$$
\begin{array}{l}
=(70+90) \div 4 \div 4 \\
=160 \div 4 \div 4 \\
=40 \div 4 \\
=10 .
\end{array}
$$

Therefore, the answer is: 10.