In the painting exhibition organized by the school, there are 35 works in the first grade, 40 in the second grade, 1.7 less than the total number of the first and second grades in the third grade, 46 less than twice the number in the fourth grade. How many works are there in the third and fourth grades?
在学校组织的绘画展览中，一年级的作品有35幅，二年级有40幅，三年级比一、二年级的总数少1,7幅，四年级比三年级的2倍少46幅．三、四年级各有多少幅作品？
<gadget id="calculator">40 - 17</gadget>
<output>23</output>

<gadget id="calculator">35 + 23</gadget>
<output>58</output>

<gadget id="calculator">58 * 2</gadget>
<output>116</output>

<gadget id="calculator">116 - 46</gadget>
<output>70</output>

<gadget id="calculator">70 + 58</gadget>
<output>128</output>

<result>128</result>