What is the quotient of the product of 4 times 0.75 minus 1.5 and dividing by 0.5?
4乘以0.75的积减去1.5，再除以0.5，商是多少？
<gadget id="calculator">4 * 0.75</gadget>
<output>3</output>

<gadget id="calculator">3 - 1.5</gadget>
<output>1.5</output>

<gadget id="calculator">1.5 / 0.5</gadget>
<output>3</output>

<result>3</result>