In the standing long jump test, Xiaohai jumped 1.5 meters, Xiaobo's score was 0.6 meters higher than Xiaohai's, and Xiaoyong's score was 0.3 meters lower than Xiaobo's. How many meters did Xiaoyong jump?
在立定跳远测试中，小海跳了1.5米，小波的成绩比小海高0.6米，小勇的成绩比小波低0.3米．小勇跳了多少米？
<gadget id="calculator">0.6 - 0.3</gadget>
<output>0.3</output>

<gadget id="calculator">1.5 + 0.3</gadget>
<output>1.8</output>

<result>1.8</result>