When the clock is 1:45, what is the obtuse angle formed by the minute hand and the hour hand?
当时钟是1点45分时，分针和时针所成的钝角是多少度．
<gadget id="calculator">360 / 60</gadget>
<output>6</output>

<gadget id="calculator">5 / 60</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(1/12) * 45</gadget>
<output>15/4 = around 3.75</output>

<gadget id="calculator">20 + (15/4)</gadget>
<output>95/4 = around 23.75</output>

<gadget id="calculator">6 * (95/4)</gadget>
<output>285/2 = around 142.5</output>

<result>285/2 = around 142.5</result>