To find out how many pens the shopkeeper needs to sell to get $1116, you can use the formula:
\[ \text{Number of pens} = \frac{\text{Total amount desired}}{\text{Price per pen}} \]
Substituting in the values:
\[ \text{Number of pens} = \frac{1116}{1.55} \]
Calculating it:
\[ \text{Number of pens} \approx 720 \]
Therefore, the shopkeeper needs to sell approximately 720 pens to receive $1116.