There are 102 squirrels in the forest, and the number of hedgehogs is 2 less than 4 times the number of squirrels. How many hedgehogs are there?
森林里的松鼠有102只，刺猬的只数比松鼠的4倍少2只，刺猬有多少只？
<gadget id="calculator">102 * 4</gadget>
<output>408</output>

<gadget id="calculator">408 - 2</gadget>
<output>406</output>

<result>406</result>