✖️ 分数乘法（自动约分）Multiplying Fractions Calculator
输入两个或多个分数（如 2/3 × 3/4，也支持整数和带分数"1 1/2"），分子乘分子、分母乘分母并约分，给出最简分数、带分数和小数。本地处理。Enter two or more fractions (e.g. 2/3 × 3/4; whole numbers and mixed numbers like "1 1/2" work too). Numerators and denominators are multiplied and reduced to the simplest fraction, mixed number and decimal. Processed locally.
使用说明与常见问题How-to & FAQ
「分数乘法（自动约分）」是什么？What is the Multiplying Fractions Calculator tool?
输入两个或多个分数（如 2/3 × 3/4，也支持整数和带分数"1 1/2"），分子乘分子、分母乘分母并约分，给出最简分数、带分数和小数。本地处理。Enter two or more fractions (e.g. 2/3 × 3/4; whole numbers and mixed numbers like "1 1/2" work too). Numerators and denominators are multiplied and reduced to the simplest fraction, mixed number and decimal. Processed locally.
如何使用「分数乘法（自动约分）」？How do I use the Multiplying Fractions Calculator tool?
填写两个或更多分数，用 × 或 * 分隔（如 2/3 × 3/4，整数和「1 1/2」这样的带分数也可以），即可得到约分后的乘积、带分数和小数。结果会随输入实时更新。Enter two or more fractions separated by × or * (such as 2/3 × 3/4; whole numbers and mixed numbers like "1 1/2" work too) to get the product as a simplified fraction, a mixed number and a decimal. The result updates as you type.
先约分？Cancel first?
交叉约分（分子与另一分数的分母先约）可以让数字更小，结果相同。Cross-cancelling first keeps numbers small; the result is the same.
能举个计算实例吗？Can you show a worked example?
例如在「分数乘法（自动约分）」中填 分数（用 × 或 * 分隔） = 2/3 × 3/4 × 5/6，结果区显示：结果（最简分数）：5/12；带分数：5/12；小数：0.416666666667For example, entering Fractions (separated by × or *) = 2/3 × 3/4 × 5/6 in the Multiplying Fractions Calculator gives: Result (simplest): 5/12; Mixed number: 5/12; Decimal: 0.416666666667
有哪些选项可以调整？What options can I adjust?
「分数乘法（自动约分）」的设置：「分数（用 × 或 * 分隔）」默认 2/3 × 3/4 × 5/6。每次生成结果都按当前设置处理。Settings in the Multiplying Fractions Calculator — "Fractions (separated by × or *)" default 2/3 × 3/4 × 5/6. The result always uses the current settings.
计算精度如何？How precise are the results?
「分数乘法（自动约分）」使用 JavaScript 双精度浮点数（约 15–16 位有效数字），部分功能使用 BigInt 处理大整数。The Multiplying Fractions Calculator uses double-precision floating point (about 15–16 significant digits); some features use BigInt for large integers.
「分数乘法（自动约分）」免费吗？需要注册吗？Is the Multiplying Fractions Calculator free? Do I need an account?
「分数乘法（自动约分）」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Multiplying Fractions Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.