Last year, Cayman Corporation had sales of $$6$ million, total variable costs of $$2$ million, and total fixed costs of $$1$ million. In addition, they paid $$480,000$ in interest to bondholders. Cayman has a $21\%$ marginal tax rate. If Cayman's sales increase $7\%,$ what should be the increase in operating income? SET YOUR CALCULATOR TO $4$ DECIMAL PLACES. ROUND TO $2$ DECIMAL PLACES AT THE END. DO NOT ENTER THE $\%$ SIGN. FOR EXAMPLE, IF YOUR ANSWER IS $9\mathrm{.}4567,$ ENTER ITAS $9\mathrm{.}46.$