After deducting 1,000 yuan from wage income in August last year, Xiao Ming's mother paid personal income tax of 15 yuan at a tax rate of 5%. How much was Xiao Ming's mother's wage income in August last year?
小明的妈妈去年的八月份工资收入扣除1000元后，按5%的税率缴纳个人所得税15元，小明的妈妈去年八月份工资收入多少元？
<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">15 / (1/20)</gadget>
<output>300</output>

<gadget id="calculator">300 + 1_000</gadget>
<output>1_300</output>

<result>1_300</result>