Copy the rows of equations below onto your paper. If the numbers in the equations continue to change in the same way as the pattern shows, write the next five rows of equations in the sequence.

$\left. \begin{array} { l } { 9 \cdot 9 + 7 = 88 } \\ { 98 \cdot 9 + 6 = 888 } \\ { 987 \cdot 9 + 5 = 8888 } \\ { 9876 \cdot 9 + 4 = 88888 } \end{array} \right.$