Regulations: If A>B, then 丨AB丨=AB; if A=B, then 丨AB丨=0, if A<B, then 丨AB丨=BA, calculated according to the above rules: 丨4.2-1.3丨+丨2.3-5.6丨+丨3.2-3.2丨=How much.
规定：如果A＞B，则丨A-B丨=A-B；如果A=B，则丨A-B丨=0，如果A＜B，则丨A-B丨=B-A，根据以上规律计算：丨4.2-1.3丨+丨2.3-5.6丨+丨3.2-3.2丨=多少．
<gadget id="calculator">4.2 - 1.3</gadget>
<output>2.9</output>

<gadget id="calculator">5.6 - 2.3</gadget>
<output>3.3</output>

<gadget id="calculator">2.9 + 3.3 + 0</gadget>
<output>6.2</output>

<result>6.2</result>