In 7 days, Jane sews 2 * 7 = <<2*7=14>>14 dresses
In the next 2 days, Jane sews 3 * 2 = <<3*2=6>>6 dresses
Jane sews a total of 14 + 6 = <<14+6=20>>20 dresses
Jane uses a total of 20 * 2 = <<20*2=40>>40 ribbons
#### 40