Compute bad debt expense for each year using: $($a$)$ the percent of sales method assuming $1\%$ of net credit sales are uncollectible; and $($b$)$ the percent of accounts receivable method assuming $10\%$ of accounts receivable are uncollectible.

Using the percent of accounts receivable method, bad debt expense for $2020$ is$?$

$\backslash$table$[[$Data$,$FYE $12/31/2018,$FYE $12/31/2019,$FYE $12/31/2020],[$Sales $($all on account$),$$$2,000,000,$$$4,000,000,$$$6,000,000$