The kitten caught 39 mice, and the big cat caught 4 times as many mice as the kitten, which was 17 less. How many mice did the big cat catch?
小猫杯到了39个老鼠，大猫捉到的数量是小猫的4倍少17个．大猫捉了多少个老鼠？
<gadget id="calculator">39 * 4</gadget>
<output>156</output>

<gadget id="calculator">156 - 17</gadget>
<output>139</output>

<result>139</result>