Finding det of a matrix after row operations.
Given a 4x4 matrix where R1: a b c d, R2: e f g h, R3: i j k l, R4: m n o p. We know that the determinant of this matrix is 9. What would the new determinant be if the matrix was transformed into R1: m n o 6p, R2: e f g 6h, R3: a b c 6d, R4: i j k 6l using elementry row operations. We are not given those row oporations only the original matrix and the new one. And we know that the original matrix has a det of 9.