Easy Farms Inc. makes tillers for small farms. Their sales budget is shown below:

Sep sales, units $10,000$

Oct sales, units $52,000$

Nov sales, units $40,000$

Management want enough tillers on hand to meet $10\%$ of next month's sales.

Each tiller requires $5$ round blades. Management wants enough blades to meet $4\%$ of next month's production needs.

What is the material budget for blades for September $($in blades$)?$

Enter as a whole number, no commas and no dollar signs.