The fifth grade teachers and students donated a total of 1,200 yuan to the disaster-stricken area, the fourth grade donated less than the fifth grade (1/8), how much did the fourth and fifth grades donate in total.
五年级师生在向灾区捐款活动中共捐款1200元，四年级比五年级少捐(1/8)，四五年级共捐款多少元．
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 - (1/8)</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">1_200 * (7/8)</gadget>
<output>1_050</output>

<gadget id="calculator">1_050 + 1_200</gadget>
<output>2_250</output>

<result>2_250</result>