Uncle Wang's original salary was 1,500 yuan, but now his monthly salary has increased by 300 yuan. By what percentage has Uncle Wang's salary increased?
王叔叔原来的工资是1500元，现在每月工资涨了300元．王叔叔的工资涨了百分之几？
<gadget id="calculator">300 / 1_500</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>