When a number is divided by 15, the quotient and remainder are both 14. What is the number?
一个数除以15，商和余数都是14，这个数是多少．
<gadget id="calculator">15 * 14</gadget>
<output>210</output>

<gadget id="calculator">210 + 14</gadget>
<output>224</output>

<result>224</result>