¡Kawashima Ryuta Kyoju No Mainichi Tanoshimu Otona No Drill No Wo Kitaeru "Keisan" 60 Nichi 3
¡Kawashima Ryuta / Cho
 Description
[Machine Translation] Simple arithmetic with two numbers (addition, subtraction, multiplication, and division). By solving simple arithmetic problems as much as possible, the brain is activated.
凌 Credits
Ryuta Kawashima
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