PainFree sells its main product, ergonomic mouse pads, for $$11$ each. Its variable cost is $$5\mathrm{.}30$ per pad. Fixed costs are $$225,000$ per month for volumes up to $65,000$ pads. Above $65,000$ pads, monthly fixed costs are $$255,000.$ Prepare a monthly flexible budget for the product, showing sales revenue, variable costs, fixed costs, and operating income for volume levels of $45,000,50,000,$ and $70,000$ pads.