Of the following pairs of numbers, the second number is obtained by performing certain mathematical operations on the first number. Now what numbers should come at the position of X and Y so that the pattern followed by the numbers written to the left of :: is the same as the numbers written to the right of ::. (Note: Mathematical operations should be performed without separating the denominators of whole numbers. For example, 13 - Mathematical operations such as addition/subtraction/multiplication can be performed on the number 13. It is not allowed to separate the denominators 1 and 3 of 13 and perform arithmetic operations on 1 and 3.) X ∶ 47 ∶∶ 16 ∶ Y