diff --git a/src/main.rs b/src/main.rs
index 40c0091..b661698 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -72,17 +72,7 @@ fn run() {
 }
 
 fn process_part_2<'a, T>(lines: T) where T: IntoIterator<Item = &'a str> {
-    let (sensors, _) = parse(lines);
-    let mut worker_bundles = HashMap::new();
-    for worker in 0..99 {
-        let mut work_item = Vec::new();
-        for sensor in &sensors {
-            let chunk_s = sensor.visibility / 100;
-            // let remainder = sensor.visibility - (99*chunk_s); <1% chance this worker contains solution.. ignore for now
-            work_item.push(chunk_s);
-        }
-        worker_bundles.insert(worker, work_item);
-    };
+    let (sensors, worker_bundles) = prep_work(lines);
 
     let mut handles = Vec::new();
     let bundle_storage = Arc::new(worker_bundles);
@@ -97,6 +87,29 @@ fn process_part_2<'a, T>(lines: T) where T: IntoIterator<Item = &'a str> {
     handles.into_iter().for_each(|handle|{ handle.join();});
 }
 
+fn prep_work<'a, T>(lines: T) -> (Vec<Sensor>, HashMap<isize, Vec<usize>>) where T: IntoIterator<Item = &'a str> {
+    let (sensors, _) = parse(lines);
+    let mut worker_bundles = HashMap::new();
+    for worker in 0..99 {
+        let mut work_item = Vec::new();
+        for sensor in &sensors {
+            let chunk_s = sensor.visibility / 100;
+            work_item.push(chunk_s);
+        }
+        worker_bundles.insert(worker, work_item);
+    };
+    // remainder worker
+    let worker = 99;
+    let mut work_item = Vec::new();
+    for sensor in &sensors {
+        let chunk_s = sensor.visibility / 100;
+        let remainder = sensor.visibility - (99*chunk_s);
+        work_item.push(remainder);
+    }
+    worker_bundles.insert(worker, work_item);
+    (sensors, worker_bundles)
+}
+
 fn do_part2_work(worker_bundles: Arc<HashMap<isize, Vec<usize>>>, worker: isize, bounds: &RangeInclusive<isize>, sensors: Arc<Vec<Sensor>>) {
     worker_bundles.get(&worker).and_then(
         |x| {