There are 135 male athletes participating in the 27th Olympic Games in my country, and 15 female athletes are twice as many as male athletes. How many male and female athletes are there altogether?
我国参加27届奥运会的男运动员135人，女运动员比男运动员的2倍少15人．男、女运动员一共多少人？
<gadget id="calculator">135 * 2</gadget>
<output>270</output>

<gadget id="calculator">270 - 15</gadget>
<output>255</output>

<gadget id="calculator">135 + 255</gadget>
<output>390</output>

<result>390</result>