Outdoor Gear Corporation manufactured $5,000$ coolers during October. The following variable overhead data relates to October:

Variable overhead spending variance

Variable overhead efficiency variance

Budgeted machine hours allowed for actual output

Actual cost per machine hour

Budgeted cost per machine hour

$$1,310$ Unfavorable

$$192$ Unfavorable

$617$ machine hours

$$27$

$$23$

Calculate the actual machine hours used by Stark during October. $($presente procedimiento$)$