Miao Miao's home is 785 meters away from the school, and walks b meters per minute. How many meters are there to the school in 5 minutes?
妙妙家到学校785米，每分钟走b米，5分钟后离学校还有多少米．
<gadget id="calculator">785 - 5</gadget>
<output>780</output>

<result>780</result>