Find the value of $531.44\div8+8$531.44÷8+8, giving your answer as a decimal.
Find the value of $8+769.04\div8-7$8+769.04÷8−7, giving your answer as a decimal.
Decrease the product of $0.307$0.307 and $0.5$0.5 by $0.02$0.02.
Find the value of $5.22+19.11\div0.7+94.87$5.22+19.11÷0.7+94.87, giving your answer as a decimal.