The annual interest rate of a certain bank's one-year fixed savings is 2.25%. When Xiaoli's mother withdraws the principal and interest due in one year, the interest tax of 36 yuan is deducted. Ask Xiaoli's mother how much is the principal deposited?
某银行一年定期储蓄的年利率是2.25%，小丽的妈妈取出一年到期的本金及利息时扣除了利息税36元．问小丽的妈妈存入的本金是多少元？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">2.25 / 100</gadget>
<output>0.0225</output>

<gadget id="calculator">36 / (1/5) / 1 / 0.0225</gadget>
<output>8_000</output>

<result>8_000</result>