diff --git "a/leetcode3/\355\231\251\354\235\200\354\247\200/1837. Sum of Digits in Base K.js" "b/leetcode3/\355\231\251\354\235\200\354\247\200/1837. Sum of Digits in Base K.js"
new file mode 100644
index 00000000..8806963e
--- /dev/null
+++ "b/leetcode3/\355\231\251\354\235\200\354\247\200/1837. Sum of Digits in Base K.js"	
@@ -0,0 +1,9 @@
+/**
+ * @param {number} n
+ * @param {number} k
+ * @return {number}
+ */
+var sumBase = function(n, k) {
+    const changedNumStr=n.toString(k)
+    return changedNumStr.split('').reduce((acc,cur)=>acc+Number(cur),0);
+};
\ No newline at end of file