What is the obtuse angle formed by the hour and minute hands at 2:45?
当时钟2点45分时，时针和分针所形成的钝角是多少度．
<gadget id="calculator">30 * 5</gadget>
<output>150</output>

<gadget id="calculator">0.5 * 45</gadget>
<output>22.5</output>

<gadget id="calculator">150 + 22.5</gadget>
<output>172.5</output>

<result>172.5</result>