While there is no agreed upon criteria, the most common definition is that premature ejaculation occurs if the man ejaculates within two minutes of penetration [1]; however, a survey by Alfred Kinsey in the 1940s demonstrated that three quarters of men ejaculate within two minutes of penetration in over half of their sexual encounters. [2]
Free cash flow is a company's operational cash flow with the effect of its current growth rate removed. Cash Flow to Firm Free cash flow can flow to equity or to the firm in general.
First, confirm that they are asking for Unlevered Free Cash Flow (Free Cash Flow to Firm). If so: Subtract COGS and Operating Expenses from Revenue to get to Operating Income (EBIT) - or just use the EBIT margin you've assumed.