Excluding the Section prefix characters in the check-digit

The job number used in this example is HIF13297I5.
	The first digit in the Rotation No. is multiplied by 6
	In this example 1 * 6 = 6
	The second digit in the Rotation No is multiplied by 5
	In this example 3 * 5 = 15
	The third digit in the Rotation No. is multiplied by 4
	In this example 2 * 4 = 8
	The fourth digit in the Rotation No. is multiplied by 3
	In this example 9 * 3 = 27
	The fifth digit in the Rotation No. is multiplied by 2
	In this example 7 * 2 = 14
		These totals (6+15+8+27+14) are added to give 70
	If the total is below 11 it is moved straight into the check-digit, otherwise, 11 is divided into this total (70 / 11) = 6 with a remainder of 4.
	The total is 6 but this is not required, only the remainder is used (4), which is subtracted from 11 giving 7. If the result is 10, 3 is moved to the check-digit. If the result is 11, 0 is moved to the check-digit. If the result is not 10 or 11 then the remainder is moved straight into the check-digit.