Express log Subscript b Baseline StartFraction p Superscript 4 Baseline q Superscript 7 Over m cubed b Superscript 8 EndFraction in terms of sums and differences of logarithms.
log Subscript b Baseline StartFraction p Superscript 4 Baseline q Superscript 7 Over m cubed b Superscript 8 EndFraction equals ___.