Roberts Enterprises has budgeted sales in units for the next five months as follows:

$\backslash$table$[[$June$,4,530$ units$],[$July$,7,250$ units$],[$August$,5,330$ units$],[$September$,6,760$ units$],[$October$,3,730$ units$]]$

Past experience has shown that the ending inventory for each month must be equal to $10\%$ of the next month's sales in units. The inventory on May $31$ contained $453$ units. The company needs to prepare a production budget for the second quarter of the year.

The total number of units to be produced in July is: