Six more than the product of 21 and a number

Six more than means + 6

The word "product" means the answer to multiplication problem

So that means we have to multiply 21 by a "number" (since the number is not specified we have to put it as a variable "x") to get the product, then you add the 6 at the end because the statement said six more

If we translate this into an equation it would look like: 21x + 6