 
 <translate> First divide 32 by 3, ignoring the remainder, to find how many chapters in the book are divisible by 3: 31 / 3 = 10.33..., which means 10 chapters are divisible by 3. Then subtract that number from the total number of chapters to find how many chapters she reads: 31 chapters - 10 chapters = 21 chapters. Then multiply the number chapters by the time to read each chapter to find the total time she spends reading: 21 chapters * 20 minutes / chapter = 420 minutes. Then divide that time by the number of minutes per movie to find the total time spent reading in hours: 420 minutes / 60 minutes / hour = 7 hours. So, the answer is 7. <hau> Na farko raba 32 da 3, ba tare da la'akari da sauran ba, don gano adadin surori a cikin littafin da za a iya raba su da 3: 31 / 3 = 10.33..., wanda ke nufin surori 10 za a iya raba su da 3. Sai ka cire wannan adadin daga jimlar surori don ka ga surori nawa ta karanta: surori 31 - surori 10 = surori 21. Sai ka ninka adadin surori da lokacin da za ka karanta kowane sura don ka samu jimlar lokacin da ta ke karantawa: surori 21 * minti 20 / sura = minti 420. Sai ka raba wannan lokacin da adadin minti na fim ɗin don ka sami jimillar lokacin da aka yi wajen karatu cikin awoyi: minti 420 / minti 60 / awa = awoyi 7. Amsar ita ce 7. 