Uncle Zhang's salary in May is 1,450 yuan, plus a bonus of 900 yuan. After deducting 1,000 yuan from the sum of wages and bonuses, the remaining part is taxed at 20% of personal adjustment tax. Can you do the math for Uncle Zhang, how much tax should he 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1000元后，所剩部分按个人调节税20%交税．你能帮小张叔叔算算，他应交纳多少元税钱？
<gadget id="calculator">900 - 1_000</gadget>
<output>-100</output>

<gadget id="calculator">1_450 + (-100)</gadget>
<output>1_350</output>

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

<gadget id="calculator">1_350 * (1/5)</gadget>
<output>270</output>

<result>270</result>