Three students A, B, and C participate in savings. A and B save 200 yuan in total, B and C save 230 yuan in total, and A and C save 270 yuan in total. How much are the three students saving in total?
甲、乙、丙三个同学参加储蓄，甲、乙两人共储蓄200元，乙、丙两人共储蓄230元，甲、丙两人共储蓄270元，三个同学共储蓄多少元．
<gadget id="calculator">200 + 230 + 270</gadget>
<output>700</output>

<gadget id="calculator">700 / 2</gadget>
<output>350</output>

<result>350</result>