Master Zhang from the cake shop took 4 kilograms of flour to make cakes. He first made 8 cakes, and each cake used 0.35 kilograms of flour. Master Zhang is going to use the remaining flour to make 3 more cakes. How many kilograms of flour do these 3 cakes use on average?
蛋糕房的张师傅领了4千克面粉准备做蛋糕，他先做了8个，每个蛋糕用面粉0.35千克．张师傅准备用剩下的面粉再做3个蛋糕，这3个蛋糕平均每个用多少千克面粉？
<gadget id="calculator">0.35 * 8</gadget>
<output>2.8</output>

<gadget id="calculator">4 - 2.8</gadget>
<output>1.2</output>

<gadget id="calculator">1.2 / 3</gadget>
<output>0.4</output>

<result>0.4</result>