The following information summarizes the standard cost for producing one metal tennis racket frame at Spaulding Industries. In addition, the variances for one month's production are given. Assume that all inventory accounts have zero balances at the beginning of the month.

Standard Cost Per Unit

Standard Monthly Costs

Materials

$ $8\mathrm{.}00$

$ $21,000$

Direct Labor $(3$ hours @ $$2\mathrm{.}00)$

$6\mathrm{.}00$

$18,000$

Factory Overhead:

Variable

$2\mathrm{.}00$

$6,000$

Fixed

$5\mathrm{.}00$

$15,000$

$ $20\mathrm{.}00$

$ $60,000$

Variances:

Material price

$ $210\mathrm{.}00$

unfavorable

Material quantity

$ $800\mathrm{.}00$

unfavorable

Labor rate

$ $630\mathrm{.}00$

favorable

Labor efficiency

$ $2,520\mathrm{.}00$

unfavorable

What was the actual quantity of materials used during the month?