What is the burden of proving a case beyond a reasonable doubt?

The court instructed the jury at least three times that the prosecution had the burden to prove its case beyond a reasonable doubt. The court also specifically instructed the jury that it "must accept and follow the law as I state it to you . . . . If anything concerning the law said by the attorneys in their arguments or at any other time during the trial conflicts with my instructions on the law you must follow my instructions." We are required to presume the jury followed this instruction, and did not accept the prosecutor's statements to the extent they conflicted with the court's instructions. (People v. Holt (1997) 15 Cal.4th 619, 662.)