The ratio of the three interior angles of a triangle is 1:1:2, what is the largest interior angle of this triangle?
一个三角形三个内角的度数比是1：1：2，这个三角形最大的内角是多少度．
<gadget id="calculator">1 + 1 + 2</gadget>
<output>4</output>

<gadget id="calculator">2 / 4</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">180 * (1/2)</gadget>
<output>90</output>

<result>90</result>