Employee Charlie Dimmock receives $$1,300$ every two weeks. A child support withholding order is received by the payroll department. He has the following deductions currently in effect:

FIT $$100\mathrm{.}00$

FICA $-$ OASDI $77\mathrm{.}50$

FICA $-$ HI $18\mathrm{.}13$

State Income Tax $40\mathrm{.}00$

Health insurance premium $50\mathrm{.}00$

$401($k$)$ contribution $39\mathrm{.}00$

$($a$)$ Calculate the disposable income subject to the child support withholding order for this employee.

$($b$)$ The child support order is for current child support only with no arrears. Charlie also supports a second family. The state where Charlie is employed permits a maximum of $50\%$ of disposable income to be withheld for child support. What is the maximum that may be withheld for this withholding order?