Wang Yun's house, Zhao Hong's house are on the same road as the school. Wang Yun is 316 meters away from the school, and Zhao Hong is 128 meters away from the school. How many meters is the distance between Wang Yun's house and Zhao Hong's house?
王云家、赵红家和学校在同一条路上．王云到学校有316米，赵红到学校有128米．王云家到赵红家至少有多少米．
<gadget id="calculator">316 - 128</gadget>
<output>188</output>

<result>188</result>