The answer is 7x+77
( X5 ) x ( X6 ) = X(5+6) = X11
"Seven fold" refers to something that is multiplied by seven. For example, if you have a quantity of 10, then seven fold would be 10 times 7, which equals 70. In a broader sense, it can apply to various contexts, such as increases, quantities, or ratios.
I do not think that quanties can be multiplied or divided. Any two quantities can be multiplied together. Any quantity can be divided by any non-zero quantity.
1
Pressure
652 multiplied by seven is 4,564
Pressure
Pressure
a quantity multiplied by itself
To install X11 on a Mac you could try Fink. Apple has information about X11 on their Developers section. (See links below)
One.
31 multiplied by 7 is 217