How to Reciprocal Every Number in Cell of a Whole Column in Libreoffice Calc?

I want to make reciprocal of a whole columns cells of libreoffice calc. I can do this by manually. Are there any way which makes reciprocal every cells element(number) of a whole column or row?

In the following figure I want to get the C column from B column:image description

assuming by reciprocal you mean multiplicative inverse, simply use in C1 the the formula =1/B1and drag the formula down in column C as far as you need to.