The number C is 87.5% of the average of the two numbers A and B. The sum of the two numbers A and B is 768. What is the number C?
丙数是甲、乙两个数的平均数的87.5%，甲、乙两个数的和是768，那么丙数是多少．
<gadget id="calculator">768 / 2</gadget>
<output>384</output>

<gadget id="calculator">87.5 / 100</gadget>
<output>0.875</output>

<gadget id="calculator">384 * 0.875</gadget>
<output>336</output>

<result>336</result>