When the flour processing factory grinds flour with another batch of wheat, a total of 4050 kg of flour is ground, and 950 kg of bran is ground at the same time. Find the flour extraction rate of wheat.
面粉加工厂再用一批小麦磨制面粉时，共磨出面粉4050千克时，同时磨出950千克麸子，求小麦的出粉率．
<gadget id="calculator">4_050 + 950</gadget>
<output>5_000</output>

<gadget id="calculator">4_050 / 5_000</gadget>
<output>81/100 = around 0.81</output>

<gadget id="calculator">100 / 100</gadget>
<output>1</output>

<gadget id="calculator">(81/100) * 1</gadget>
<output>81/100 = around 0.81</output>

<result>81/100 = around 0.81</result>