As part of a company incentive, each sales person that sells over \$40{,}000$40,000dollar sign, 40, comma, 000 in merchandise th

is month will be paid a 10\%10%10, percent commission on the portion of the sales over \$40{,}000$40,000dollar sign, 40, comma, 000. The sales up to and including \$40{,}000$40,000dollar sign, 40, comma, 000 will be commissioned at 5\%5%5, percent. If William sells sss dollars worth of merchandise at his company this month and earns \$3{,}860$3,860dollar sign, 3, comma, 860 in commission, what is the value of sss?