Uncle Zhang's salary in May is 1,450 yuan, plus a bonus of 900 yuan. After deducting 1,600 yuan from the sum of wages and bonuses, the remaining part is taxed at 20% of the personal adjustment tax. Can you help Uncle Zhang calculate how much tax he should pay?
小张叔叔5月份工资是1450元，另外奖金900元．工资和奖金总和扣除1600元后，所剩部分按个人调节税20%缴税，你能帮小张叔叔算算，他应交纳多少元税钱？
<gadget id="calculator">900 - 1_600</gadget>
<output>-700</output>

<gadget id="calculator">1_450 + (-700)</gadget>
<output>750</output>

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

<gadget id="calculator">750 * (1/5)</gadget>
<output>150</output>

<result>150</result>