TransCaladonia issued some bonds to fund a new project. How much debt did they issue if their WACC dropped to 9%.

Consider X amount is issued for bonds to fund new project .

Substitute in WACC equation ,

WACC 9% = (( $2,000,000 +X) 6% + $500,000 x 8% + $2,500,000 x12%) / ($5,000,000 +X)

By solving this we will get issued funds for new project as$333,333

Can you please break down the steps of this calculation? I'm not sure how the formula equals $333,333: WACC 9% = (( $2,000,000 +X) 6% + $500,000 x 8% + $2,500,000 x12%) / ($5,000,000 +X)