To find the quotient of \( 842.4 \div -0.6 \), we can start by calculating the division:
\[ 842.4 \div -0.6 = - (842.4 \div 0.6) \]
Now, calculate \( 842.4 \div 0.6 \):
\[ 842.4 \div 0.6 = 1404 \]
So,
\[ 842.4 \div -0.6 = -1404 \]
Thus, the answer is:
\(-1,404\)