I'm using a parlay standard odds calculator that takes the standard lines and multiplies them out to create the parlay odds.
Pittsburgh@Cleveland, Pittsburgh odds are 100 to 340, Cleveland is +280.
San Diego@Kansas City, San Diego 100 to 125, KC 105 to 100
Tennessee@Miami TN at 200 to 100, Miami at 100 to 240
Pittsburgh wins that means a bet of 100 wins 100 back + 29.40 or 1.294 to 1 payout.
San Diego wins, payout is 1.8 to 1
Miami wins, payout becomes 1.417 to 1. Multiply the three together to get the odds.
1.294 x 1.8 x 1.417 = 330 so a bet of 100 would yield 330, or 230 to 100 odds. This is the standard method of calculation for parlays and also for calculating your odds on any multiple bets.