Any one help me solve this question in excel 2007 
The Salesworksheet contains 48 months of sales at a toy store. Create an array formula
to add (beginning with Month 3) every fifth month of sales. (Hint: You might want
to use the Excel MOD function. MOD(number,divisor)yields the remainder after the
number is divided by the divisor. For example, MOD(7,5)yields 2. Use concept of Array formulae and function
The Salesworksheet contains 48 months of sales at a toy store. Create an array formula
to add (beginning with Month 3) every fifth month of sales. (Hint: You might want
to use the Excel MOD function. MOD(number,divisor)yields the remainder after the
number is divided by the divisor. For example, MOD(7,5)yields 2. Use concept of Array formulae and function