print(16 * 5 / 4 * 2 / 5 - 8)
-3.33
0.0
The given expression evaluates step by step according to the precedence of arithmetic operators (division and multiplication from left to right, followed by subtraction):
\[ 16 \times 5 = 80, \quad 80 \div 4 = 20, \quad 20 \times 2 = 40, \quad 40 \div 5 = 8, \quad 8 - 8 = 0.0. \]
Therefore, the output of the statement is \( 0.0 \).

A ladder of fixed length \( h \) is to be placed along the wall such that it is free to move along the height of the wall.
Based upon the above information, answer the following questions:
(iii) (b) If the foot of the ladder, whose length is 5 m, is being pulled towards the wall such that the rate of decrease of distance \( y \) is \( 2 \, \text{m/s} \), then at what rate is the height on the wall \( x \) increasing when the foot of the ladder is 3 m away from the wall?