Do not use chatgpt

I need to do everything in excel, so please explain well the formulas.

Group Company produces a single product with the following per-unit attributes: price. $10; variable material cost. $2; variable direct labor cost. $3; variable manufacturing overhead, $1.50; and fixed manufacturing overhead, $1.50. Total fixed costs at Group Company are $5,000,000. How many units must Group Company sell to break even?

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Event Company produces a single product with the following characteristics: price per unit, $25.00; variable material cost per unit, $8.60; variable labor cost per unit, $3.60; variable overhead cost per unit, $1.80; and fixed overhead cost per unit, $2.00. Event Company's manufacturing fixed costs are $5 million, and selling, general, and administration fixed costs are $2.5 million. What dollar sales are required for Event Company to earn a target profit of $500,000?