What is 4(4 1/3)

Assuming you mean 4* (4 + 1/3):

= 4* (12/3 + 1/3)

= 4 * 13/3

= $${\frac{{\mathtt{52}}}{{\mathtt{3}}}} = {\mathtt{17.333\: \!333\: \!333\: \!333\: \!333\: \!3}}$$