Master Li makes 35 parts per hour. How many parts did he make from 8:30 to 11:30 in the morning?
李师傅每小时做35个零件，他从早上8：30--11：30一共做了多少个零件？
<gadget id="calculator">11.5 - 8.5</gadget>
<output>3</output>

<gadget id="calculator">35 * 3</gadget>
<output>105</output>

<result>105</result>