The fifth grade teachers and students donated love and donated a total of 1750 yuan, which was less than the sixth grade (1/5). How much is the total donation for the fifth and sixth grades?
五年级师生献爱心捐款活动，共捐1750元，比六年级少捐(1/5)．五、六年级一共捐款多少元？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1_750 / (4/5)</gadget>
<output>4_375/2 = around 2_187.5</output>

<gadget id="calculator">(4_375/2) + 1_750</gadget>
<output>7_875/2 = around 3_937.5</output>

<result>7_875/2 = around 3_937.5</result>