[tex]a = 15[/tex]
[tex]b = 8[/tex]
[tex]c = 7[/tex]
[tex]a \times b \times c = 15 \times 8 \times 7[/tex]
[tex] = 120 \times 7[/tex]
[tex] = 840[/tex]
[tex]b \times c \times a = 8 \times 7 \times 15[/tex]
[tex] = 56 \times 15[/tex]
[tex] = 840[/tex]
[tex]c \times a \times b = 7 \times 15 \times 8[/tex]
[tex] = 105 \times 8[/tex]
[tex] = 840[/tex]