If among 7 consecutive odd numbers, the largest number is 5 times the smallest number, what is the largest number?
如果7个连续奇数中，最大数是最小数的5倍，问最大数是多少？
<gadget id="calculator">7 * 2</gadget>
<output>14</output>

<gadget id="calculator">14 - 2</gadget>
<output>12</output>

<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">12 / 4</gadget>
<output>3</output>

<gadget id="calculator">3 * 5</gadget>
<output>15</output>

<result>15</result>