The Cleaning$-$Well Corporation manufactures two types of vacuum cleaners, the Victor for commercial building use and the House$-$Mate for residences. Budgeted and actual operating data for the year $2020$ were as follows:

Static Budget Victor House$-$Mate Total

Number sold $6,00024,00030,000$

Contribution margin $$1,560,000$ $$3,120,000$ $$4,680,000$

Actual Results Victor House$-$Mate Total

Number sold $5,50038,00043,500$

Contribution margin $$1,400,000$ $$4,130,000$ $$5,530,000$

What is the total sales$-$quantity variance in terms of the contribution margin?