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README.md

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 # advanced-zeros
 Let's count zeros!
+
+## Task
+
+Your task is to implement `getZerosCount` function, which takes any integer number `number` (`1 <= number <= 10^7`) as first argument and any integer number `base` (`2 <= base <= 256`) as second argument. You should calculate *how many zeros in the end of number, which is factorial of `number` in `base` base system*
+
+For example:
+```js
+    const zerosCount = getZerosCount(10, 10); // Factorial of 10 is 3628800 and the same in 10th base system
+    console.log(zerosCount); // 2. Because there is 2 *tail* zeros in number 3628800
+```
+
+```js
+    const zerosCount = getZerosCount(16, 16); // Factorial of 16 is 20922789888000 in 10th base system and *130777758000* in 16th base system
+    console.log(zerosCount); // 3. Because there is 3 *tail* zeros in number *130777758000*
+```
+
+### Important!
+Do not try to calculate factorial! First - you will not get exact answer on big numbers. Second - it could take several years to calculate factorial on big integers! Try to think up your awesome solution without such calculations. Good luck!

package.json

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+{
+  "name": "advanced-zeros",
+  "version": "1.0.0",
+  "description": "Let's count zeros!",
+  "main": "index.js",
+  "scripts": {
+    "test": "mocha test.js"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/yankouskia/advanced-zeros.git"
+  },
+  "author": "",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/yankouskia/advanced-zeros/issues"
+  },
+  "homepage": "https://github.com/yankouskia/advanced-zeros#readme",
+  "devDependencies": {
+    "mocha": "^5.0.1"
+  }
+}

src/index.js

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+module.exports = function getZerosCount(number, base) {
+  // your implementation
+}