The most recent financial statements for Burnaby Co$.$ are shown here:

$\backslash$table$[[$Statement of Co$,$ive Incon,Statement of Financial Position$],[$Sales$,$$$13,550,$Current assets,$$11,300,$Debt,$$15,800],[$Costs$,8,850,$Fixed assets,$27,250,$Equity,$22,750],[$Taxable income,$ $4,700,$Total,$$38,550,$Total,$$38,550],[$Taxes $(40\%),1,880,,,,],[$Net income,$ $2,820,,,,]]$

Assets and costs are proportional to sales. Debt and equity are not. Burnaby maintains a constant $20\%$ dividend payout ratio. No external equity financing is possible.

What is the internal growth rate? $($Do not round intermediate calculations and round your final answer to $2$ decimal places.$)$ Internal growth rate $\%$