In the activity of offering love, Xiao Ming and Xiao Hong donated their lucky money to children in impoverished mountainous areas. Xiao Ming donated 850 yuan, 15% less than Xiao Hong's donation. How much did Xiaohong donate?
在献爱心活动中，小明和小红将自己的压岁钱捐给了贫困山区的孩子．小明捐款850元，比小红捐款少15%．小红捐款多少元？
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1 - (3/20)</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">850 / (17/20)</gadget>
<output>1_000</output>

<result>1_000</result>