Under isothermal compression, the gas pressure increased 8 times. What is the initial gas volume

Under isothermal compression, the gas pressure increased 8 times. What is the initial gas volume if at the end of the process the gas occupied 0.24m ^ 3?

P2 = 5 * P1.
V2 = 0.24 m ^ 3.
T = const
V1 -?
We will use the Boyle-Mariotte law, when T = const, the equality is true: P1 * V1 = P2 * V2.
V1 = P2 * V2 / P1 = 5 * P1 * V2 / P1 = 5 * P1.
V1 = 5 * 0.24 m ^ 3 = 1.2 m ^ 3.
Answer: initial gas volume V1 = 1.2 m ^ 3.