First, find the wage colum. 614.89 is between the 600 and 620. Then go down the row of 2 exemptions and you'll get 20.81
Next, 359.50 is between the 340 and 360 in the wage colum. Go across the chart with your left figure while your right figure goes down the row of 0 exceptions to find 18.91
Finally, 708.75 is between 700 and 720 and meet it I'm the row for 1 exemption and you'll find 28.46