Xiaodong has 128 stamps, and Xiaohong's stamps are 3 times less than Xiaodong's. How many stamps does Xiaohong have?
小东有邮票128张，小红的邮票比小东的4倍少3张．小红有多少张邮票？
<gadget id="calculator">128 * 4</gadget>
<output>512</output>

<gadget id="calculator">512 - 3</gadget>
<output>509</output>

<result>509</result>