To find the quotient of \( 842.4 ÷ -0.6 \), we can perform the division:
First, divide the absolute values: \[ 842.4 \div 0.6 = 1404 \]
Since we are dividing a positive number by a negative number, the result will be negative: \[ 842.4 ÷ -0.6 = -1404 \]
Thus, the correct answer is: \[-1404\] (negative 1,404).