Excel multiple formulas?

Hello,

Not sure if it is possible to use multiple formulas but here is the question.

Column M has a value that I would like to round to the nearest whole number which I have found can be done by using =ROUND(M38,0).

In column N I would like to take the result of the above function (without having to create another column that reports only the result of rounding the number in column M) and use the rounded result of column M in a formula that will reference a cell in spreadsheet B within the same workbook. The formula would go on to use that referenced cell from spreadsheet b and multiply its value by another value in spreadsheet A Column K. Thus putting the entire result in Column N.

Ex.
Spreadsheet A, Column M value is 5.05. Rounding that number to the nearest whole you get 5. By saying that 5 equals a certain value such as 0.345 from Column C of Spreadsheet B. I want Column N to read out a result of 0.345 multiplied by a number in Column K of Spreadsheet A.