Convert the five-step calculation into a tactile visual teaching board with copy reserved for later typesetting.
Convert the source calculation into a contemporary national Saudi infographic in 4:5 inside a region-neutral modern studio. Every person shown in this image is a fictional adult aged 25 or older with no visual resemblance to any real person and wears modest, fully opaque clothing. Show only the hands and forearms of one fictional Saudi educator aged 32 arranging four wooden input blocks, a cosine-wave template, a folding transform guide, and four coefficient tiles on a matte work surface. Use a tactile close study led by hands, tools, paper, wood, and metal texture, with clear five-step visual progression and accessible contrast. Reserve one clean blank title area, one clean blank equation area, one clean blank table area, and five clean blank numbered callout label slots; place each blank callout target beside its corresponding leader line for professional post-typesetting after generation. Do not generate text, letters, numbers, formulas, labels, logos, wordmarks, readable interfaces, or code.
