(2/3) of a right angle is (how many) degrees.
直角的(2/3)是(多少)度．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">90 * (2/3)</gadget>
<output>60</output>

<result>60</result>