It sounds like you're looking to turn a $100 bonus into a 7x multiplier on slots. Here are a few tips to help you achieve that:
1. **Choose the Right Slot Game:** Look for slot games with high RTP (Return to Player) percentages. Games with RTPs above 96% are generally better.
2. **Manage Your Bankroll:** Set a budget and stick to it. Divide your bonus into smaller bets to maximize your playtime and chances of hitting a big win.
3. **Take Advantage of Free Spins:** Many online casinos offer free spins as part of their promotions. Use these to increase your chances without spending your own money.
4. **Play Progressive Jackpots:** These slots can offer huge payouts, but remember, they also come with higher risks.
5. **Know When to Stop:** If you hit a significant win, consider cashing out a portion of your winnings to ensure you walk away with a profit.
Good luck, and remember to play responsibly!