There are 1 stamp each with 4 cents, 8 cents, and 10 cents. How much postage can I pay? how do you think?
有4分、8分、10分的邮票各1枚，可以支付多少种邮资费？你是怎样想的？
<gadget id="calculator">3 + 3 + 1</gadget>
<output>7</output>

<result>7</result>