"When one works with deadly bacteria, it is advisable to have some sort of cure. Contamination by their own experiments has been the demise of many a mad scientist. Don't let this happen to you! Work with my antibacterial preparation for practice."

"The antibacterial preparation is created by a complex process of distillation and mixtures. I am producing large quantities of the antibacterial preparation to sell, once I have released the bacteria into your world. The process must remain constant. A simple formula is used to monitor process."

"I have contaminated this cute little bunny. If you can find the correct value of the antibacterial preparation, you can save the bunny. If not, you will get to see how fast my flesh-eating bacteria works."

 

The Formula

AB - C + D = the antibacterial preparation Preparation Value

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