There were originally some passengers in the subway, 59 people went down after arriving at the station, and 43 people came up again. At this time, there were still 173 passengers in the subway. How many passengers were there originally?
地铁里原来有一些乘客，到站后下去59人，又上来43人，这时地铁里还有乘客173人，原来有乘客多少人？
<gadget id="calculator">173 - 43</gadget>
<output>130</output>

<gadget id="calculator">59 + 130</gadget>
<output>189</output>

<result>189</result>