There are 248 pages in a book. Joanna can read 16 pages per hour. On Monday, she reads for 3 hours. On Tuesday, she reads for 6.5 hours. How many more hours does she need to read to finish the book?
On Monday, Joanna reads 3*16=
<gadget id="calculator">3*16</gadget>
<output>48</output>
48 pages.
On Tuesday, Joanna reads 6.5 * 16 =
<gadget id="calculator">6.5*16</gadget>
<output>104</output>
104 pages.
So far, she has read 48 +104 =
<gadget id="calculator">48+104</gadget>
<output>152</output>
152 pages.
Thus, she has 248-152 = 
<gadget id="calculator">248-152</gadget>
<output>96</output>
96 pages left.
She will need to read for 96/16 = 
<gadget id="calculator">96/16</gadget>
<output>6</output>
6 hours to finish the book.

<result>6</result>