From bc2a2fa8b31222369764887737e1a3d81371064b Mon Sep 17 00:00:00 2001
From: FeignClaims <www4112379@163.com>
Date: Thu, 24 Oct 2024 16:52:24 +0800
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---
 faq/exercise/split_digits.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/faq/exercise/split_digits.rst b/faq/exercise/split_digits.rst
index 6d165566..995edc42 100644
--- a/faq/exercise/split_digits.rst
+++ b/faq/exercise/split_digits.rst
@@ -2,7 +2,7 @@
 拆分整数的各位数
 ************************************************************************************************************************
 
-拆分整数的核心在于,
+拆分整数的核心在于, 十进制的表示方式是 :math:`d_0 * 10^0 + d_1 * 10^1 + ... + d_n * 10^n`, 因此,
 
 - 利用整数求余 :cpp:`%` 运算, 我们可以 "筛" 掉高位部分: :cpp:`2193 % 100 == 93`.
 - 利用整数整除 :cpp:`/` 运算, 我们可以 "筛" 掉低位部分: :cpp:`2193 / 100 == 21`.