Interest tax = interest * 20%, and the depositor will withhold and collect it when the depositor withdraws money. If the annual interest rate of the bank's 1-year fixed deposit is 1.98%, when a depositor withdraws the principal and interest due in 1 year, the interest tax of 31.68 yuan will be deducted. How much cash should the bank pay the depositor?
利息税=利息*20%，储户取款时由银行代扣代收，若银行1年定期储蓄年利率为1.98%，某储户取出1年到期本金及利息时，扣除了利息税31.68元，则银行该向储户支付的现金是多少元？
<gadget id="calculator">1.98 / 100</gadget>
<output>0.0198</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">31.68 / 0.0198 / (1/5)</gadget>
<output>8_000</output>

<gadget id="calculator">1 + 0.0198</gadget>
<output>1.0198</output>

<gadget id="calculator">8_000 * 1.0198</gadget>
<output>8_158.4</output>

<gadget id="calculator">8_158.4 - 31.68</gadget>
<output>8_126.72</output>

<result>8_126.72</result>