The ratio of the number of pictures of Zhao Jia and Li Min is 4:5. Zhao Jia has 40 pictures, how many pictures does Li Min have more than Zhao Jia?
赵佳和李敏的画片张数的比是4：5．赵佳有40张画片，李敏比赵佳多几张画片？
<gadget id="calculator">4 + 5</gadget>
<output>9</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">40 / (4/9)</gadget>
<output>90</output>

<gadget id="calculator">90 - 40</gadget>
<output>50</output>

<gadget id="calculator">50 - 40</gadget>
<output>10</output>

<result>10</result>