Your expression is equivalent to
-4/(35*16*7) = -1/(35*4*7) = -1/980
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If you intend these parentheses, then the expression looks like the ratio of two fractions.
(-4/35)/(16/7)
To evaluate it, you can multiply the numerator fraction by the multiplicative inverse of the denominator fraction, in short, "invert and multiply."
= (-4/35)*(7/16) = (-4*7)/(35*16) = (-4*7)/(5*7*4*4)
= -1/(5*4) = -1/20
-4/(35*16*7) = -1/(35*4*7) = -1/980
_____
If you intend these parentheses, then the expression looks like the ratio of two fractions.
(-4/35)/(16/7)
To evaluate it, you can multiply the numerator fraction by the multiplicative inverse of the denominator fraction, in short, "invert and multiply."
= (-4/35)*(7/16) = (-4*7)/(35*16) = (-4*7)/(5*7*4*4)
= -1/(5*4) = -1/20
