Tuliskan kedua pecahan bersebelahan. Kalikan bilangan atas pecahan pertama dengan bilangan bawah pecahan kedua. Tuliskan jawabanmu di sebelah pecahan pertama. Kalikan bilangan atas pecahan kedua dengan bilangan bawah pecahan pertama. Tuliskan jawabannya di sebelah pecahan kedua. Bandingkan hasil perkalian silang keduanya. Pahami cara kerjanya.

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
For example, compare the fraction 3/5 and the fraction 2/3. Write these next to each other on the page: 3/5 on the left, and 2/3 on the right. In our example, the top number, or numerator, of the first fraction (3/5) is 3. The bottom number, or denominator, of the second fraction (2/3) is also 3. Multiply these together: 3 x 3 = ? This method is called cross-multiplication, because you multiply numbers in a diagonal line across from each other. Write the product, or answer to your multiplication