A book with 300 pages, read the whole book (2/3) in the first week, and the number of pages read in the second week is (1/2) of the first week, how many pages did you read in the second week?
一本书300页，第一星期看了全书的(2/3)，第二星期看的页数是第一星期的(1/2)，二个星期看了多少页？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">300 * (2/3) * (1/2)</gadget>
<output>100</output>

<gadget id="calculator">300 * (2/3)</gadget>
<output>200</output>

<gadget id="calculator">100 + 200</gadget>
<output>300</output>

<result>300</result>