The escalator is running at a uniform speed, and Xiao Ming and Xiao Hong go upstairs from the escalator. It is known that Xiaoming walks 25 steps per minute, and Xiaohong walks 20 steps per minute. As a result, it takes Xiaoming 5 minutes and Xiaohong 6 minutes to reach the upstairs respectively. How many steps does the escalator have?
自动扶梯以均匀速度行驶着，小明和小红从扶梯上楼．已知小明每分钟走25级台阶，小红每分钟走20级台阶，结果小明用5分钟，小红用了6分钟分别到达楼上．该扶梯共有多少级台阶？
<gadget id="calculator">25 * 5</gadget>
<output>125</output>

<gadget id="calculator">20 * 6</gadget>
<output>120</output>

<gadget id="calculator">125 - 120</gadget>
<output>5</output>

<gadget id="calculator">6 - 5</gadget>
<output>1</output>

<gadget id="calculator">5 / 1</gadget>
<output>5</output>

<gadget id="calculator">25 + 5</gadget>
<output>30</output>

<gadget id="calculator">30 * 5</gadget>
<output>150</output>

<result>150</result>