Friend has 4 DUI's within 12 months, how much jail time will he do?

A fourth DWI / DUI arrest during the driver’s lifetime will be charged as a Class C felony. A conviction may again result in a minimum 10-year denial of driving privileges. The driver will be classified as an “aggravated offender.”

• JAIL: Up to seven years in prison.
• FINE: Up to $5,000.00, plus court costs of $10.00 to $100.00.
• PROBATION: Missouri law prohibits a suspended execution of sentence for a felony DWI. The court may suspend execution of sentence, provided that the court orders you to serve either 10 days in jail or 60 days of community service.
• REVOCATION OF DRIVING PRIVILEGES: Upon a fourth or subsequent criminal conviction for DWI or DUI, the defendant's driver's license may be revoked for a minimum of 10 years regardless of how old the prior convictions are. These revocations or "denials" go on the person's driving record forever. If convicted of a felony DWI or DUI, no hardship license is available.