What is the quotient of dividing 4.5 by the product of 4.5 and its reciprocal.
4.5除以4.5与它的倒数相乘的积，商是多少．
<gadget id="calculator">1 / 4.5</gadget>
<output>0.222222</output>

<gadget id="calculator">4.5 * 0.222222</gadget>
<output>0.999999</output>

<gadget id="calculator">4.5 / 0.999999</gadget>
<output>4.500005</output>

<result>4.500005</result>