There are several pears and apples, the number of pears is 17 fewer than the total (3/5), and the number of apples is 31 fewer than the total (4/7), so what is the total number of pears and apples?
有梨和苹果若干个，梨的个数是全体的(3/5)少17个，苹果的个数是全体的(4/7)少31个，那么梨和苹果的个数共多少？
<gadget id="calculator">17 + 31</gadget>
<output>48</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">(4/7) - 1</gadget>
<output>-3/7 = around -0.428571</output>

<gadget id="calculator">(3/5) + (-3/7)</gadget>
<output>6/35 = around 0.171429</output>

<gadget id="calculator">48 / (6/35)</gadget>
<output>280</output>

<result>280</result>