Xiao Ming's home is 900 meters away from the school. One morning, he went to school from home. After walking 75 meters, he found that he forgot to bring his math books. After returning home to pick up the books, he continued to walk to the school. How many meters did Xiao Ming walk to school this morning?
小明家离学校900米，一天早晨，他从家去学校上学，走了75米后发现忘记带数学书，返回家取书后，继续步行到学校．这天早晨小明上学一共走了多少米？
<gadget id="calculator">75 * 2</gadget>
<output>150</output>

<gadget id="calculator">900 + 150</gadget>
<output>1_050</output>

<result>1_050</result>