Please Help me, I don't find the right answer, for this exercis:

A company working in the multimedia field wants to conduct a survey of 600 organizations in the Outaouais region to find out the use of the Internet by these organizations for the purposes of electronic commercial transactions. Let's assume that the company has in its possession a sampling frame containing the complete list of names, addresses, telephone numbers, etc. of these 600 organizations. We want to conduct a small survey of 30 organizations in this region. a) We want to select the organizations that we want to survey using the systematic sampling method. Determine the step size required to select numbers from the random number table. b) Using the random number table (Table A11 - Random number tables), choose a number between 1 and the step determined in a) respecting the following rule: Entry point into the table: 4th row, 1st column from the right with reading from top to bottom of 2-digit numbers (the first two on the right).