Calculation: 1.0{_{1}**(.)}+2.1{_{2}**(.)}+3.2{_{3}**(.)}+4.3{_{4}**( ．)}+5.4{_{5}**(．)}+…+9.8{_{9}**(．)}=how much.
计算：1.0{_{1}**(．)}+2.1{_{2}**(．)}+3.2{_{3}**(．)}+4.3{_{4}**(．)}+5.4{_{5}**(．)}+…+9.8{_{9}**(．)}=多少．
<gadget id="calculator">13 * 3</gadget>
<output>39</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 + 2.1 + 6.5 + 39 + (1/2)</gadget>
<output>49.1</output>

<result>49.1</result>