The students watered the trees, the third grade watered 45 trees, the fourth grade watered 10 more trees than the third grade, and the fifth grade watered twice as many trees as the fourth grade. How many more trees are watered in the fifth grade than in the third grade?
同学们浇树，三年级浇树45棵，四年级比三年级多浇10棵，五年级浇的棵数等于四年级的2倍．五年级比三年级多浇多少棵？
<gadget id="calculator">45 + 10</gadget>
<output>55</output>

<gadget id="calculator">55 * 2</gadget>
<output>110</output>

<gadget id="calculator">110 - 45</gadget>
<output>65</output>

<result>65</result>