The ratio of the three interior angles of a triangle is 7:3:2. What is the largest interior angle in this triangle.
一个三角形三个内角度数之比为7：3：2．这个三角形中最大的内角度数是多少．
<gadget id="calculator">7 + 3 + 2</gadget>
<output>12</output>

<gadget id="calculator">7 / 12</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">180 * (7/12)</gadget>
<output>105</output>

<result>105</result>