6 times of a number is 960, how much is 4 times of this number.
一个数的6倍是960，这个数的4倍是多少．
<gadget id="calculator">960 / 6</gadget>
<output>160</output>

<gadget id="calculator">160 * 4</gadget>
<output>640</output>

<result>640</result>