What is 4 times the sum of the largest two-digit number and the smallest two-digit number?
最大的两位数与最小的两位数的和的4倍是多少．
<gadget id="calculator">99 + 10</gadget>
<output>109</output>

<gadget id="calculator">109 * 4</gadget>
<output>436</output>

<result>436</result>