A three-digit number, after removing a 0 at the end, is 342 less than the original, what is the three-digit number?
一个三位数，末尾去掉一个0后，就比原来少342，这个三位数是多少？
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">342 / 9</gadget>
<output>38</output>

<gadget id="calculator">38 * 10</gadget>
<output>380</output>

<result>380</result>