Given a=1.6, b=0.74, c=0.26, find the value of ab+bc.
已知a=1.6，b=0.74，c=0.26，求ab+bc的值．
<gadget id="calculator">1.6 * 0.74</gadget>
<output>1.184</output>

<gadget id="calculator">0.74 * 0.26</gadget>
<output>0.1924</output>

<gadget id="calculator">1.184 + 0.1924</gadget>
<output>1.3764</output>

<result>1.3764</result>