Not as it is, but turning it into money you can withdraw is simple. A cashback bonus is traded once. When a trade placed with it wins, the amount you traded comes back to you together with your winnings and goes into your Real Funds, and from there you can withdraw it like any other money in your account. There is no further turnover requirement and nothing else to clear.
How much do you need to trade?
Only the bonus amount, once. A $50 (¥7,500) cashback bonus is used up after $50 (¥7,500) of trades, whether that's a single trade or several smaller ones. Each trade settles on its own: if it wins, the payout goes into your Real Funds, and if it loses, only the bonus you staked is lost. Remember that you need Real Funds of at least the trade amount to trade with your cashback bonus. See Why can't I trade with my cashback bonus?
Withdrawing
Accepting a cashback bonus never affects your ability to withdraw your own money. Some brokers attach a trading requirement to a bonus that locks the whole balance until it's met; we don't. A withdrawal is taken from your Real Funds only, including the winnings from trades placed with your cashback bonus, and is made in the usual way from the client area. Your cashback bonus is not touched: any of it you haven't traded yet stays in your Cashback Bonus balance until you trade it or it expires, 30 days after it was credited. See How to withdraw.
Related: Bonus and cashback conditions · Why can't I trade with my cashback bonus? · How to withdraw · Withdrawal fees and limits · What is the Rewards program?