Selling, general and administrative expense (Tables)

12 Months Ended

Dec. 31, 2021

Selling, general and administrative expense

Schedule of Selling, general and administrative expenses

Selling, general and administrative expenses consist of the following:

	Year ended
	December 31,
	2021		2020
Selling, general and administrative expenses:
Salaries and benefits	$	188,391	$	104,252
Sales and marketing		41,841		23,272
Rent and occupancy		27,957		13,124
Travel		7,942		4,779
Professional fees		39,669		47,598
Office supplies and services		29,091		17,237
Other		35,215		17,012
Total selling, general and administrative expense	$	370,106	$	227,274