Xiaoyuan's house is 300 meters to the east of Xiaoyue's house. Xiaoyue walked westward for 50 meters first, and asked Xiaofang to go to Xiaoyuan's house together. How many meters did Xiaoyue walk to Xiaoyuan's house?
小元家在小月家的东面，相距300米，小月先向西走了50米，约小芳一起去小元家，小月一共走了多少米才到小元家？
<gadget id="calculator">50 * 2</gadget>
<output>100</output>

<gadget id="calculator">100 + 300</gadget>
<output>400</output>

<result>400</result>