So, in that case, we can represent that L will be is equal to what, D into R, now this R is called recycle fraction or you can simply it is denoted or you can say it is the reflux there.
അതായത് നമുക്ക് L എന്നതിനെ D ഇന്റു R എന്ന് എഴുതാവുന്നതാണ്.